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19 Best AR-15 Scopes & Optics

19 Best AR-15 Scopes & Optics

Are you looking for the best AR scope to take with you on your next hunting trip? Or are you looking for the best AR-15 scopes in terms of value for money? Not sure what options are the best for you?

Your AR-platform rifle deserves the best scope or sight you can provide, whether on the cheaper or more expensive side. Fortunately, there are a multitude of options to choose from.

In this guide, I will give you the 19 best AR-15 scopes on the market. With a healthy mix of Low Power Variable Optics and red dot sights, each optic has its strengths and features that will be perfect for your needs.

Remember that the best AR-15 scope for your needs will differ from others. When choosing, you must prioritize factors like budget, durability, use case, and others which I will discuss below.

  • Best Overall: Vortex Strike Eagle 1-6×24
  • Best Budget Scope: Leapers UTG 3-12×44
  • Best Hunting Scope: Leupold VX-Freedom CDS 3-9×50
  • Best Scope for Coyote Hunting: Sig Sauer Tango6T 1-6×24
  • Best Night Vision Scope: ATN X-Sight 4K Pro Edition 3-14×50
  • Best Tactical Scope: Vortex Viper PST Gen II 1-6×24
  • Best Long Range Scope: Primary Arms PLx 6-30×56
  • Best Mid Range Scope: Primary Arms SLx 1-6×24
  • Best Red Dot: Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer
  • Best Budget Red Dot: Vortex SPARC AR Red Dot 1×22
  • Best Red Dot Magnifier: Vortex VMX-3T Magnifier
  • Best Compact Scope: Sig Sauer Romeo5 1×20
  • Best BDC Scope: Bushnell AR Optics 1-4×24
  • Best ACOG Scope: Trijicon ACOG 4×32 BAC
  • Best Short Range Scope: Vortex Spitfire 3x Prism Scope
  • Best Prism Scope: Primary Arms SLx 1x MicroPrism
  • Best Holographic Sight: EOTech XPS2 Transverse Holographic Red Dot Sight
  • Best Fast Acquisition Scope: Trijicon RMR Type 2 1×65
  • Best for Both Eyes Open: EOTech HWS EXPS 3 Circle Red Dot Sight
Best Overall
Vortex Strike Eagle 1-6x24

Vortex Strike Eagle 1-6x24

  • Magnification Range: 1-6x
  • Objective Diameter: 24 mm
  • Length: 10.5 in
  • Weight: 18.5 oz (524.5 g)
  • FFP/SFP: SFP
  • Reticle: AR-BDC3
Best Budget Scope
Leapers UTG 3-12x44

Leapers UTG 3-12x44

  • Magnification Range: 3-12x
  • Objective Diameter: 44 mm
  • Length: 14 in
  • Weight: 23.2 oz (657.7 g)
  • FFP/SFP: SFP
  • Reticle: Illuminated Enhancing Mil-Dot
Leupold VX-Freedom CDS 3-9x50

Leupold VX-Freedom CDS 3-9x50

  • Magnification Range: 3-9x
  • Objective Diameter: 50 mm
  • Length: 12.1 in
  • Weight: 14.6 oz (413.9 g)
  • FFP/SFP: SFP
  • Reticle: CDS Duplex

Contents

1. Vortex Strike Eagle 1-6×24 (Best Overall)

Vortex Strike Eagle 1-6x24 (Best Overall)

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Key Features

  • Magnification Range: 1-6x
  • Objective Diameter: 24 mm
  • Tube Diameter: 30 mm
  • Reticle Options: AR-BDC3
  • Field of View: 19.2 – 116.5 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.5 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 10.5 in
  • Weight: 18.5 oz (524.5 g)
  • Eye Relief: 3.5 in
  • Other Special Features: Fixed parallax at 100 yards, fully multi-coated lenses with HD glass elements, LED illuminated reticle for low light performance, fast focus eyepiece, glass-etched reticle, waterproof, shockproof, and fogproof

The Vortex Optics Strike Eagle 1-6×24 is the best overall of the AR-15 scopes on this list because of its versatility and features and its all-around high-quality scope that will not break the bank.

With the 1x to 6x zoom range on the Vortex Optics Strike Eagle, you will not have any issues doing any shooting within close quarters up to medium engagement distances. This makes it a must-have for tactical situations.

Additionally, the fully-multi coated lenses add the benefit of scratch and glare resistance, plus the HD glass elements mean that light transmission is excellent on the Vortex Strike Eagle.

When compared to other scopes in the same price range, this Strike Eagle AR-15 rifle scope offers a full set of features, excellent glass quality, and a good balance of zoom range and portability.

The best part is that all of these features come at price points between $299 and $760, depending on the package and add-ons you want (like a magnification quadrupled), making it highly affordable.

Pros
  • One of the best AR-15 scopes in terms of complete features at great value
  • Low-capped windage and elevation adjustments to reduce accidental bumps
  • Standard tube diameter that fits on most mounting systems
  • AR-BDC3 reticle is clear and is tailor-made for use on an AR-15 rifle scope
  • Good variable zoom range while not being too heavy and large
Cons
  • No Zero-stop feature

2. Leapers UTG 3-12×44 (Best Budget Scope)

Leapers UTG 3-12x44 (Best Budget Scope)

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Key Features

  • Magnification Range: 3-12x
  • Objective Diameter: 44 mm
  • Tube Diameter: 30 mm
  • Reticle Options: Wire Mil-Dot
  • Field of View: 10 – 32 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.25 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 11.1 in
  • Weight: 23.1 oz (654.9 g)
  • Eye Relief: 3 – 3.4 in
  • Other Special Features: Side wheel adjustable turret for 10 to infinity parallax adjustment, zero locking and zero stop systems to quickly return to zero, sealed and nitrogen filled, shockproof, fog proof, and rainproof, EZ TAP Illuminating Enhancement System illuminated reticle with multiple color options, included flip-up lens covers and Picatinny rail rings

If you are more concerned about your budget and want the best scope under the $200 price point, then the Leapers UTG 3-12×44 should be your AR-15 scope pick.

This scope is packed to the max with features, with the most notable one being the EZ TAP Illuminating Enhancement System, which offers a whopping 36 colors with multiple brightness settings for the reticle.

This reticle illuminating system lets you combine multiple color and brightness options to get the clearest and most distinguishable color and illumination given your shooting environment.

It also has a zero-locking and zero-stop system to prevent accidental adjustments and make going back to zero after adjusting it much quicker and easier.

For all the money you save, the Leapers UTG 3-12×44 provides a large objective lens, good mid to long-range shooting zoom levels, and is loaded with tons of features that provide users with the best bang for their buck.

Pros
  • Boatload of features for a low price
  • Unique EZ TAP system gives reticle 36 color options
  • Zero resetting turrets to quickly return to zero
  • Simple Mil-Dot reticle
  • Adjustable parallax at this price point
Cons
  • On the heavier side
  • EZ TAP system has a learning curve

3. Leupold VX-Freedom CDS 3-9×50 (Best Hunting Scope)

Leupold VX-Freedom CDS 3-9x50 (Best Hunting Scope)

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Key Features

  • Magnification Range: 3-9x
  • Objective Diameter: 50 mm
  • Tube Diameter: 25.4 mm (1 in)
  • Reticle Options: CDS Duplex
  • Field of View: 13.6 – 33.1 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.25 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 12.1 in
  • Weight: 14.6 oz (413.9 g)
  • Eye Relief: 3.7 – 4.2 in
  • Other Special Features: Leupold’s Advanced Optical System for maximum light transmission, scratch resistant, waterproof, shockproof, and fog proof, resettable index ring zero stop

If you are looking for a go-to hunting scope for your AR-15, the Leupold VX-Freedom CDS 3-9×50 should be your first pick. Its main benefits are the large objective lens, reticle, and glass quality.

For starters, having a large 50mm objective lens helps in letting in more light during dusk or dawn. This allows a shooter to see much more through the optical glass in those lower-light situations.

Leupold’s Advanced Optical System used in their optical glass also helps with letting in more light. The high light transmission characteristic means you have two features solely for providing better image clarity.

The CDS Duplex reticle is perfect for hunting, as many hunters prefer the thick posts that thin out as you get to the center for more precise shots. It helps users identify and aim at wild game in a busy forest background.

Finally, the long eye relief for both the 3x and 9x zoom levels means you will not have difficulty getting on target quickly. Plus, you will never get black eyes from scope bruising thanks to its four inches of eye relief.

Pros
  • CDS Duplex reticle is best-in-class for target acquisition in busy environments
  • Great for short to midrange hunting
  • Very generous eye relief
  • Top glass quality in terms of low light performance from Leupold
  • Scratch-resistant lenses for durability when hunting
Cons
  • No illuminated reticle

4. Sig Sauer Tango6T 1-6×24 (Best Scope for Coyote Hunting)

Sig Sauer Tango6T 1-6x24 (Best Scope for Coyote Hunting)

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Key Features

  • Magnification Range: 1-6x
  • Objective Diameter: 24 mm
  • Tube Diameter: 30 mm
  • Reticle Options: FL-6 Hellfire
  • Field of View: 17.7 – 106.7 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.2 MIL adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 16 in
  • Weight: 20.9 oz (592.5 g)
  • Eye Relief: 4.1 in
  • Other Special Features: HDX optics extra-low dispersion glass, fast focus eyepiece, laser engraved mounting line to align riflescope to scope rings, IPX8 waterproof and fog proof, throw lever, night vision compatible with locking illumination dial

If you are mainly doing coyote hunting and need a reliable AR-15 scope that is also compatible with night vision, then the Sig Sauer Tango6T 1-6×24 is your best bet.

This rifle scope is meant for close-range to mid-range shooting, which fits the characteristics needed in coyote hunting scopes. Its 1-6x magnification is a good zoom range to nail these canines.

Additionally, you will be hunting coyotes a lot more frequently at night, so you will appreciate the compatibility with night vision and reticle illumination options the Tango6T offers.

One of the underrated features on most rifle scopes is an integrated throw lever, which the Tango6T has. This allows you to quickly change zoom levels to catch even the most elusive of prey.

Overall, the Sig Sauer Tango6T has features that make it uniquely capable for coyote hunting, and you will be delighted when using it, especially at night.

Pros
  • High light transmission and optical clarity
  • Perfect zoom range for coyote hunting
  • Night vision compatible with reticle illumination
  • Easy to mount and align
  • Fogproof for coyote hunting in humid environments
  • Long eye relief and wide field of view
Cons
  • No MOA reticle option

5. ATN X-Sight 4K Pro Edition 3-14×50 (Best Night Vision Scope)

ATN X-Sight 4K Pro Edition 3-14x50 (Best Night Vision Scope)

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Key Features

  • Type of Night Vision: Digital NV
  • Magnification Range: 3-14x
  • Resolution: 600 lp/mm
  • Detection Range: 5.47 yards to infinity
  • IR Illuminator: Yes
  • Objective Diameter: 50 mm
  • Reticle: Smart MIL Dot
  • Adjustment Click Value: N/A (Digital)
  • Parallax: 5.47 yards to infinity
  • Field of View, Angle: 460 feet at 1,000 yards
  • FFP/SFP: N/A (Digital)
  • Windage and Elevation Turrets: Digital
  • Battery Life: 18 hours
  • Length: 13.8 in
  • Weight: 33.6 oz (952.5 g)
  • Eye Relief: 3.5 in
  • Attachment/Mount Type: Ring with Picatinny rail
  • Other Special Features: Programmable hash marks on the MIL reticle, recoil-activated video, smart range finder, Auxiliary Ballistic Laser, Ballistic Calculator, compatible with and syncs to iOS/Android app using Bluetooth

If night vision features and having a high-tech AR-15 scope are important to you, then the ATN X-Sight 4K Pro Edition 3-14×50 should be your first draft pick.

Its low light performance is stellar, as it has a night vision feature that allows you to see targets even in the darkest conditions with minimal ambient light. The reticle is also customizable to be illuminated and seen more clearly in the dark.

The advantage of the tech in this scope cannot be emphasized enough. The 4K Ultra HD viewing outputs high-res video, and you can record in smooth 120 fps at 1080p resolution with the camera being activated by your rifle’s recoil.

The only downside to this scope is the weight, which is to be expected with something packing this much tech. However, if you accept the heft, it is a great digital scope option that allows you to see targets in the dark and record your kills in HD.

Pros
  • Packed to the max with smart features
  • Records up to 1080p at 120 fps video
  • Viewscreen is in 4K Ultra HD
  • Long 18-hour battery life
  • Adjustable MIL reticle focus is convenient
Cons
  • On the heavier side

6. Vortex Viper PST Gen II 1-6×24 (Best Tactical Scope)

Vortex Viper PST Gen II 1-6x24 (Best Tactical Scope)

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Key Features

  • Magnification Range: 1-6x
  • Objective Diameter: 24 mm
  • Tube Diameter: 30 mm
  • Reticle Options: VMR-2 MOA, VMR-2 MRAD
  • Field of View: 18.8 – 112.5 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.5 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 10.9 in
  • Weight: 22.7 oz (643.5 g)
  • Eye Relief: 3.8 in
  • Other Special Features: Fixed parallax at 100 yards, XD lens elements with XR fully multi-coated lenses, ArmorTek coating, waterproof, fog proof, shockproof, LED reticle illumination with 150 hours of battery

The Vortex Viper PST Gen II 1-6×24 is the best AR-15 scope for tactical uses. It has a reticle that balances quick target acquisition and long-range accuracy.

The primary focus of any good tactical scope is the reticle. The VMR-2 reticle can be picked up in either MRAD or MOA adjustment systems, which is great for those who want multiple options that suit their preferred unit of measurement.

The Viper’s Low light performance is also stellar, and image clarity is great with the XD lens elements. The XR multi-coated lenses also help reduce glare and scratching, making the sight image clearer.

Finally, the Vortex Optics Viper PST Gen II is a highly durable and rugged scope. For tactical use, you will need a scope that doesn’t break easily, and the Viper is the one to bring on operations or in crisis situations.

Pros
  • Great field of view to reduce tunnel vision
  • VMR-2 reticle is great for tactical use
  • Durable and rugged
  • XD lens elements help see in low light situations
  • 150 hours of reticle illumination
Cons
  • Would be better if it had 8x or 10x for shooting at longer ranges

7. Primary Arms PLx 6-30×56 (Best Long Range Scope)

Primary Arms PLx 6-30x56 (Best Long Range Scope)

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Key Features

  • Magnification Range: 6-30x
  • Objective Diameter: 56 mm
  • Tube Diameter: 34 mm
  • Reticle Options: ACSS
  • Field of View: 3.3 – 16.6 feet at 100 yards
  • FFP/SFP: First focal plane
  • Adjustment Click Value: 0.1 MIL adjustment per turret click
  • Windage and Elevation Turrets: Exposed
  • Length: 15.6 in
  • Weight: 38.2 oz (1083 g)
  • Eye Relief: 3.3 – 4 in
  • Other Special Features: Parallax adjustment from 35 yards to infinity, daylight bright reticle illumination, waterproof, fog proof, and shockproof, included sunshade and flip caps, high-quality Japanese glass

The Primary Arms PLx 6-30×56 has the longest zoom range out of all the AR-15 scopes on this list. This makes this Primary Arms scope ideal for your long-range AR-15 build.

For starters, the 6x to 30x zoom range is an obvious indicator that it is focused on shooting at much longer ranges. The clear Japanese glass helps a ton in making small objects appear larger and more clearly.

This Primary Arms scope has an impressive ACSS reticle with a feature that helps shooters estimate the target distance through the scope. This makes it a lot easier when target shooting without distance markers.

The reticle also has daylight bright illumination, allowing you to see the reticle even at noon when the sun diminishes and obscures lower-quality reticles. Your reticle is not going anywhere with the PLx.

The only downsides to this optic are the heavy weight and lack of MOA option, so if these are deal breakers for you, try looking elsewhere.

Pros
  • High-quality Japanese glass for top-tier image quality
  • 6x to 30x zoom for shooting at long extended ranges
  • ACSS reticle has great range estimation
  • Daylight bright illumination for faster target acquisition
  • First focal plane helps visibility in low to middle magnification
Cons
  • Heavy scope
  • Not the best for close-range use

8. Primary Arms SLx 1-6×24 (Best Mid Range Scope)

Primary Arms SLx 1-6x24 (Best Mid-Range Scope)

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Key Features

  • Magnification Range: 1-6x
  • Objective Diameter: 24 mm
  • Tube Diameter: 30 mm
  • Reticle Options: ACSS in .22 LR, 5.56, 5.45, and .308
  • Field of View: 19.3 – 110 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.5 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 10 in
  • Weight: 16.9 oz (479.1 g)
  • Eye Relief: 3.3 – 3.5 in
  • Other Special Features: Specific bullet drop compensator reticles for different calibers, LED illumination on the reticle with 11 brightness settings, waterproof, fogproof, included flip lens covers

The Primary Arms SLx 1-6×24 is the best midrange LPVO scope for your AR-15. It has a good zoom range perfect for closer engagements and an ACSS BDC reticle tailor-made to the most common AR platform calibers.

Primary Arms’ ACSS reticle is unique compared to most other AR-15 scopes because of the BDC feature customized to a specific rifle caliber, which reduces the mental calculation you need to make before calibrating your reticle.

This is ideal for a midrange scope that needs to balance long-range accuracy with aiming speed. The calibers supported by the SLx include .22 LR, 5.56, 5.45, and .308, or the common AR-platform rounds.

My only minor complaint is the eye relief, which could be longer, especially on a 1x to 6x zoom scope. Having a longer eye box really helps with aiming quicker and giving users more peripheral awareness.

Pros
  • ACSS reticle is specifically for use with common AR-15 calibers for midrange accuracy
  • 1x to 6x zoom works for both close and midrange
  • Bullet Drop Compensation is very accurate
  • Compact and lightweight
  • Ideal for shooting between 300 and 800 yards
Cons
  • Could have a longer eye relief

9. Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer (Best Red Dot)

Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer (Best Red Dot)

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Key Features

  • Red Dot Type: Scoped red dot sight
  • Magnification: 1x
  • Objective Diameter: 38 mm
  • Illumination Color: Red
  • Brightness Settings: 10 (4 night vision, 6 daylight)
  • Reticle Type: 2 MOA Dot
  • Adjustment Click Value: 0.5 MOA adjustment per turret click
  • Parallax: Parallax-free
  • Field of View: N/A
  • FFP/SFP: N/A
  • Battery Life: 30,000 hours
  • Length: 5.2 in
  • Weight: 11.6 oz (328.9 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes, up to 150 feet
  • Shockproof: Yes
  • Gun Type Compatibility: Rifle
  • Attachment/Mount Type: Picatinny
  • Other Special Features: Mount and spacer are both included, anodized aluminum housing, transparent rear flip cover, recessed lens openings to prevent scratching

For the AR-15 owners looking for the best red dot sights, the Aimpoint Patrol Rifle Optic (Aimpoint PRO) is your best bet. It perfectly balances quick aiming, precision, battery longevity, and quality.

This red dot scope from Aimpoint has everything you want in a red dot optic. It has unlimited parallax adjustment and eye relief, an easily visible red dot reticle, and a lightweight and compact body.

However, the Aimpoint PRO stands out because of its 30,000-hour battery life, AR-15 specific red dot spacer, and mount, Aimpoint’s famous reliability, and the 4 NV – 6 daylight brightness modes.

These additional features are all useful and make this the best red dot sight you can buy out of all the AR-15 scopes on this list.

Pros
  • Balances aiming speed and precision with the 2 MOA red dot
  • Very long battery life
  • Comes with an AR-15-specific riser mount and spacer
  • Aimpoint reliability
  • NV compatible with 6 daylight settings
Cons
  • Slight clutter around the sight picture

10. Vortex SPARC AR Red Dot 1×22 (Best Budget Red Dot)

Vortex SPARC AR Red Dot 1x22 (Best Budget Red Dot)

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Key Features

  • Red Dot Type: Scoped red dot sight
  • Magnification: 1x
  • Objective Diameter: 22 mm
  • Illumination Color: Red
  • Brightness Settings: 10
  • Reticle Type: 2 MOA Dot
  • Adjustment Click Value: 1 MOA adjustment per turret click
  • Parallax: Parallax-free
  • Field of View: N/A
  • FFP/SFP: N/A
  • Battery Life: 50,000 hours
  • Length: 2.9 in
  • Weight: 7.5 oz (212.6 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes
  • Shockproof: Yes
  • Gun Type Compatibility: Rifle
  • Attachment/Mount Type: Picatinny absolute co-witness mount
  • Other Special Features: Fully multi-coated optic

If the Aimpoint PRO is out of your price range, then the Vortex SPARC AR Red Dot 1×22 should be your pick. It is one of the most competitive AR-15 scopes/red dot sights in terms of value for money.

The 50,000-hour longevity of the battery should tell you how great the value for money on this red dot is. It has almost the same feature set as the much more expensive Aimpoint PRO.

As far as budget red dots go, the SPARC AR does everything you would want red dot sights to do. It also has the added benefit of having fully multi-coated lenses for extra scratch and glare resistance.

However, the 22mm objective does not let in as much light as the Aimpoint, leading to picture quality that is not as impressive. However, it is really good for less than half the price of its competitor.

Pros
  • Best red dot sight under $200
  • Amazing 50,000-hour battery longevity
  • 2 MOA dot sight balances aiming speed and precision
  • 2 NV compatible settings and 8 daylight settings
Cons
  • Light transmission and image quality are not as good as Aimpoint PRO

11. Vortex VMX-3T Magnifier (Best Red Dot Magnifier)

Vortex VMX-3T Magnifier (Best Red Dot Magnifier)

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Key Features

  • Red Dot Type: Red dot magnifier
  • Magnification: 3x
  • Objective Diameter: 30 mm
  • Illumination Color: N/A
  • Brightness Settings: N/A
  • Reticle Type: N/A
  • Adjustment Click Value: N/A
  • Parallax: No info
  • Field of View: 38.2 feet at 100 yards
  • FFP/SFP: N/A
  • Battery Life: N/A
  • Length: 4.3 in
  • Weight: 11.9 oz (337.4 g)
  • Eye Relief: 2.2 in
  • Waterproof: Yes
  • Shockproof: No
  • Gun Type Compatibility: Rifle
  • Attachment/Mount Type: Picatinny side flip mount
  • Other Special Features: Fogproof, nitrogen gas purged, absolute co-witness flip mount

Sometimes, you want to have the short-range prowess of red dots while also having the ability to shoot at farther range. This is where the Vortex Optics VMX-3T magnifier comes in.

It comes with a fixed magnification of around 3x, effectively making your setup a 1x – 3x zoom scope when combined with a 1x red dot sight. However, you are adding some weight and bulk to your setup.

That said, the magnifier itself is not too heavy and has great light capture to give you a clear picture of the target. On the other hand, the eye relief is also not great at only 2.2 inches long.

The best part is that this red dot magnifier can flip in and out quickly as needed. It can also work with other types of sights, like a holographic sight, increasing your versatility and range or combat effectiveness.

If you need to have a 3x option while still having the ease of use of red dots, get this to complete your AR loadout. It will give you the best of both worlds.

Pros
  • Adds 3x magnification option to your existing red dot sights
  • Fixed power scope, fewer moving parts
  • Flips out of the way when not needed
  • Waterproof and fogproof like their aforementioned AR-15 red dot
Cons
  • Adds extra weight
  • 2.2-inch eye relief is short

12. Sig Sauer Romeo5 1×20 (Best Compact Scope)

Sig Sauer Romeo5 1x20 (Best Compact Scope)

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Key Features

  • Red Dot Type: Scoped red dot
  • Magnification: 1x
  • Objective Diameter: 20 mm
  • Illumination Color: Red
  • Brightness Settings: 10 (2 NV, 8 daylight)
  • Reticle Type: 2 MOA Dot
  • Adjustment Click Value: 1 MOA adjustment per turret click
  • Parallax: Parallax-free
  • Field of View: N/A
  • FFP/SFP: N/A
  • Battery Life: 40,000
  • Length: 2.5 in
  • Weight: 5.1 oz (144.6 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes, IPX7
  • Shockproof: No
  • Gun Type Compatibility: Rifles, shotguns, full-size handguns
  • Attachment/Mount Type: Picatinny mount, low profile
  • Other Special Features: MOTAC motion-activated illumination, LockDown Zero system to return to zero, LenShield and LensArmor coatings to protect from scratches, oil, and gunk, Quad Reticle options, solar battery charging

The Sig Sauer Romeo5 1×20 is one of the best red dots for those looking for the ultimate compact and lightweight setup. It does this while managing to pack in a lot of exciting features.

At only 2.47 inches long and weighing in at a measly 5.1 ounces, the Romeo5 is one of the smallest and most compact red dots available. Aside from rifles, it can also be mounted on other types of guns like shotguns and pistols.

One of the useful features packed into the small body is the shake-awake feature called MOTAC. This detects movement to only turn on the illumination when needed, saving battery power.

Another feature that extends battery longevity is solar charging, which can help recharge some of the battery power lost during heavy outdoor use.

While it does not provide as clear of a sight picture as some other red dots on this list, it is a great versatile and compact option that will work well for most people.

Pros
  • Lightweight and compact
  • Compatible with non-rifle firearms
  • Motion sensing activation for the reticle
  • Long battery life
  • Solar battery charging to help extend longevity
Cons
  • Image clarity is not the best

13. Bushnell AR Optics 1-4×24 (Best BDC Scope)

Bushnell AR Optics 1-4x24 (Best BDC Scope)

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Key Features

  • Magnification Range: 1-4x
  • Objective Diameter: 24 mm
  • Tube Diameter: 30 mm
  • Reticle Options: Drop Zone 223
  • Field of View: 27 – 112 feet at 100 yards
  • FFP/SFP: Second focal plane
  • Adjustment Click Value: 0.1 MIL adjustment per turret click
  • Windage and Elevation Turrets: Exposed
  • Length: 9.4 in
  • Weight: 18 oz (510.3 g)
  • Eye Relief: 3.5 in
  • Other Special Features: Fully multi-coated optics, fast focus eyepiece, 100 yards fixed parallax, power change lever

Any great AR-15 scope needs bullet drop compensation to shoot at long range. The Bushnell AR Optics 1-4×24 offers the best BDC reticle and features to complement it.

The Drop Zone 223 reticle is the perfect BDC reticle because it is not too busy and helps get more precise shots. This ensures the quick acquisition of your target and maintains accuracy at a longer range.

The thick posts on the duplex-style reticle thin out towards the middle, while the lower post has hash marks that can easily be seen and used to compensate with reticle elevation.

The one nitpick I have with this AR-15 sight is that the turrets are exposed but not locking. While it makes adjustment easy, locking mechanisms would have been great to prevent accidental adjustments.

Pros
  • Great value for money
  • Drop Zone 223 reticle has great BDC holdovers for shooting up to 500 yards
  • Magnification ring throw lever helps change zoom quickly
  • Compact size
Cons
  • Would like to see a locking system on the turrets

14. Trijicon ACOG 4×32 BAC (Best ACOG Scope)

Trijicon ACOG 4x32 BAC (Best ACOG Scope)

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Key Features

  • Magnification Range: 4x
  • Objective Diameter: 32 mm
  • Tube Diameter: N/A
  • Reticle Options: Illuminated TA-31-C
  • Field of View: 36.8 feet at 100 yards
  • FFP/SFP: N/A
  • Adjustment Click Value: 0.25 MOA adjustment per turret click
  • Windage and Elevation Turrets: Capped
  • Length: 5.8 in
  • Weight: 9.9 oz (280.7 g)
  • Eye Relief: 1.5 in
  • Other Special Features: Military-grade aluminum housing, BAC scope allowing for both eyes open shooting, Trijicon Fiber Optics automatically adjust brightness to the environment, Tritium lamp for 15-year automatic reticle illumination, anti-reflective coated lenses

If you are looking for an AR-15 scope that has more zoom than reflex sights or holographic sights but is more compact than an LPVO, then the Trijicon ACOG 4×32 BAC is your best option.

The Trijicon ACOG is one of the most widely used rifle optics in the US Military, and it is for a good reason. This 4x fixed magnification scope has great build quality, glass clarity, and practicality.

It fills the gap between 1x red dots and traditional iron sights while being more compact than long-range scopes and LPVOs. The medium magnification of 4x is a reflection of this balance.

It is built with military-grade aluminum housing and has an anti-reflective coating on the lenses to make sure that shooters have the clearest possible optic that they can rely on day in and day out.

The only gripe I have with this scope is the 1.5-inch eye relief, which can be short for some, especially if you are used to red dots. However, you can easily get used to it after some practice.

Pros
  • Basically unlimited reticle illumination with no worrying about battery
  • Red and green reticle options
  • 4x zoom is the perfect level for a fixed magnification scope
  • Been used by the US Military since 2004 on their M16/M4 rifles
  • Good field of view for a 4x scope
Cons
  • Eye relief is a bit short
  • Expensive

15. Vortex Spitfire 3x Prism Scope (Best Short Range Scope)

Vortex Spitfire 3x Prism Scope (Best Short Range Scope)

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Key Features

  • Red Dot Type: Prism
  • Magnification: 3x
  • Objective Diameter: 21 mm
  • Illumination Color: Red
  • Brightness Settings: 12
  • Reticle Type: AR-BDC4
  • Adjustment Click Value: 1 MOA adjustment per turret click
  • Parallax: 100 yards
  • Field of View: 37.9 feet at 100 yards
  • FFP/SFP: N/A
  • Battery Life: 50,000 hours
  • Length: 3 in
  • Weight: 9.3 oz (263.7 g)
  • Eye Relief: 2.6 in
  • Waterproof: Yes
  • Shockproof: Yes
  • Gun Type Compatibility: Rifle
  • Attachment/Mount Type: Standard
  • Other Special Features: Included multi-height mount, custom BDC reticle designed for 5.56 caliber AR-15s, fully multi-coated optic lenses, nitrogen gas purged

The best close-range scope is the Vortex Optics Spitfire 3x Prism Scope. It has a mix of features, including the zoom level, reticle, and illumination, that help make it ideal for CQB and indoor range shooting.

The 3x zoom is an alternative to the previously mentioned 4x ACOG. While they are both fixed, the Vortex Spitfire uses prism technology to make the scope smaller while improving light transmission.

This means you get a lower zoom optic while making it more compact. Another thing that helps with short-range CQB is the reticle, which is both etched and can be illuminated with up to 12 brightness settings, with the lowest two settings being ultra-low for night-vision use.

The advantage of this Vortex Optics Prism scope is that even if you run out of battery, the scope still functions the same way. The reticle is clear while having some hash marks for bullet drop.

Pros
  • Has illumination on the reticle but works even without it
  • 3x is a good zoom for closer-range targets
  • AR-BDC4 reticle provides rapid transitions for holdovers
  • Great light transmission
Cons
  • Parallax can be annoying when aiming at close-range

16. Primary Arms SLx 1x MicroPrism (Best Prism Scope)

Primary Arms SLx 1x MicroPrism (Best Prism Scope)

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Key Features

  • Red Dot Type: Prism
  • Magnification: 1x
  • Objective Diameter: 17 mm
  • Illumination Color: Red
  • Brightness Settings: 13
  • Reticle Type: ACSS Cyclops
  • Adjustment Click Value: 1 MOA adjustment per turret click
  • Parallax: not parallax-free, no info found
  • Field of View: 76.5 feet at 100 yards
  • FFP/SFP: N/A
  • Battery Life: 29,000 hours
  • Length: 2.5 in
  • Weight: 7 oz (198.5 g)
  • Eye Relief: 3.6 in
  • Waterproof: Yes, IP67
  • Shockproof: No
  • Gun Type Compatibility: Rifle, full-size handgun
  • Attachment/Mount Type: Picatinny
  • Other Special Features: Included mount with 8 height options, included lens covers, etched reticle with illumination, fully multi-coated optics, nitrogen purged for fog resistance, dust resistance

The Primary Arms SLx MicroPrism is the best prism sight on this list. At only 2.5 inches long and 7 ounces, it is a compact option with great image quality.

One of the headlining features of this prism scope is the ACSS Cyclops reticle, which is both etched and features 13 brightness settings, including three night vision-compatible modes.

The micro red dot on the ACSS reticle is clear and has a chevron tip design. This means the micro red dot is easily seen while still being pinpoint accurate.

The glass clarity is also exceptional, especially for a scope with only a 17mm objective. This shows that prism scopes have a place in the saturated low-zoom optics market.

My only gripe with this optic is that you will see a noticeable parallax shift, especially when compared to a reflex sight or other holographic sights. This is something you get used to quickly, though.

Pros
  • Long battery life while also having an etched reticle
  • Compact and lightweight
  • Long eye relief for a prism scope
  • Night vision compatible
  • Great light transmission for the small objective diameter
Cons
  • Parallax can be annoying compared to reflex sights

17. EOTech XPS2 Transverse Holographic Red Dot Sight (Best Holographic Sight)

EOTech XPS2 Transverse Holographic Red Dot Sight (Best Holographic Sight)

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Key Features

  • Red Dot Type: Holographic sight
  • Magnification: 1x
  • Objective Diameter: 22 mm
  • Illumination Color: Red
  • Brightness Settings: 20
  • Reticle Type: 1-Dot, Circle 1-Dot, and Circle 2-Dot
  • Adjustment Click Value: 0.5 MOA per turret click
  • Parallax: Parallax-free
  • Field of View: N/A
  • FFP/SFP: N/A
  • Battery Life: 1,000 hours
  • Length: 3.8 in
  • Weight: 8 oz (226.8 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes, 10 ft
  • Shockproof: No
  • Gun Type Compatibility: Rifle
  • Attachment/Mount Type: 1″ Weaver or MIL-STD-1913 rail
  • Other Special Features: 68 MOA ring surrounded by a 1 MOA center dot, comes with a protective case

If you have ever heard of holographic sights, then you have definitely heard of EOTech. They introduced the holographic sight to the market, and for good reason.

The EOTech Holo sight has very clear glass with 20 brightness levels on the holo reticle. This makes it the perfect option for anyone who needs a CQB optic.

The sight picture is also not cluttered, with the premium military-grade aluminum housing being both minimal and strong. This helps with keeping the optic light but is durable and effective.

It is the best holographic sight you can buy for your AR-15 build, especially if you want something different than your red dots or LPVOs.

Do keep in mind that the battery longevity on it is not too long at only 1,000 hours, so you will want to have back-up iron sights just in case the battery dies on you in a sticky situation.

Pros
  • Legendary holographic sights used by the US Military
  • Exceptional glass clarity with numerous illumination settings
  • Very quick target acquisition with
  • Little to no bulk around the sight picture
  • Premium build quality
Cons
  • Only 1,000 hours of battery life

18. Trijicon RMR Type 2 1×65 (Best Fast Acquisition Scope)

Trijicon RMR Type 2 1x65 (Best Fast Acquisition Scope)

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Key Features

  • Red Dot Type: Reflex
  • Magnification: 1x
  • Objective Diameter: 16 mm
  • Illumination Color: Red
  • Brightness Settings: Adjustable with Tritium
  • Reticle Type: 3.25 MOA dot
  • Adjustment Click Value: 1 MOA adjustment per turret click
  • Parallax: Parallax-free
  • Field of View: N/A
  • FFP/SFP: N/A
  • Battery Life: no hours given, two years
  • Length: 1.8 in
  • Weight: 1.2 oz (34 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes, 66 feet
  • Shockproof: Yes
  • Gun Type Compatibility: Rifle, handgun, shotgun
  • Attachment/Mount Type: Not included
  • Other Special Features: Automatic brightness adjustment for the red dot, Tritium-phosphor lamp illumination for low light and LED for bright conditions, multi-coated lens, tool-less adjustment, forged aluminum construction

The Trijicon RMR reflex sight is the best of the red dots when it comes to quick target shooting. This is because of the 3.25 MOA dot, uncluttered sight picture, light weight, and unlimited eye relief.

The good points of any fast target acquisition sight are that it needs to have a clear reticle, be lightweight, be parallax-free, and not obstruct the sight picture.

The Trijicon RMR fulfills all of these requirements and more. It is very lightweight, has a 3.25 MOA dot that is easy to see in a busy background, and has unlimited eye relief with zero parallax.

This is also the perfect optic for anyone wanting to install side-mounted red dots on their AR-15 as a back-up option if their LPVO or long-range scope is not set at the ideal magnification.

The Trijicon RMR is a no-brainer buy for anyone who wants a reflex sight because you can use this on most guns. Just make sure to buy an appropriate mount since it does not come with one in the box.

Pros
  • Most compact and lightweight sight, ideal for CQB
  • Perfect for use as an offset red dot
  • Multi-platform friendly
  • Very long battery longevity
  • The most uncluttered and clear sight picture
Cons
  • No quick detach mount included

19. EOTech HWS EXPS 3 Circle Red Dot Sight (Best for Both Eyes Open)

EOTech HWS EXPS 3 Circle Red Dot Sight (Best for Both Eyes Open)

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Key Features

  • Red Dot Type: Holographic
  • Magnification: 1x
  • Objective Diameter: 22 mm
  • Illumination Color: Red
  • Brightness Settings: 30
  • Reticle Type: Circle 1-Dot, 2-Dot, and 4-Dot
  • Adjustment Click Value: 0.5 MOA per turret click
  • Parallax: Parallax-free
  • Field of View: 4 inches at 30 yards
  • FFP/SFP: N/A
  • Battery Life: 1,000
  • Length: 3.5 in
  • Weight: 11.2 oz (317.5 g)
  • Eye Relief: Unlimited
  • Waterproof: Yes, 33 ft
  • Shockproof: No
  • Gun Type Compatibility: Full-size handgun, rifle
  • Attachment/Mount Type: 1″ Weaver or MIL-STD-1913 rail
  • Other Special Features: Fogproof, 10 NV settings

If you are looking for a great both-eyes-open shooting sight for your AR-15 other than the default iron sights, then the EOTech HWS EXPS 3 Circle Red Dot Sight is your best pick.

It is a holographic sight that is a smaller, more compact version of the previously mentioned XPS Transverse model. However, this model is even more unobtrusive and with a clear sight picture.

Having no clutter around the sight makes both eyes open shooting easier. While it can be done on reflex sights like the Trijicon RMR, this holo sight has a much bigger MOA dot reticle.

This makes it easier to acquire and aim at targets with both eyes open without having to squint too much. It is also small enough to be used with full-size handguns, so you can swap them between your AR-15 and your handgun.

Pros
  • A smaller version of the excellent XPS Transverse EOTech holo sight
  • Perfect for both eyes open shooting
  • Even more uncluttered sight picture
  • More NV-compatible settings
  • Can be mounted on full-size handguns
Cons
  • Not as wide a field of view as the XPS Transverse

What Are Key Factors to Consider When Buying an AR-15 Scope?

Before you pick up any one of these AR-15 scopes to replace your stock iron sights, you should check which of these factors is most important to you, as this will determine which scope will be ideal for your needs.

Purpose and Shooting Style

ScopePurpose & Shooting Style
Vortex Strike Eagle 1-6x24Close to mid-range tactical shooting
Leapers UTG 3-12x44Hunting
Leupold VX-Freedom CDS 3-9x50Close to mid-range hunting
Sig Sauer Tango6T 1-6x24Close to mid-range hunting
ATN X-Sight 4K Pro Edition 3-14x50Night vision hunting
Vortex Viper PST Gen II 1-6x24Tactical shooting
Primary Arms PLx 6-30x56Long-range shooting
Primary Arms SLx 1-6x24Mid-range shooting
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerClose quarters combat
Vortex SPARC AR Red Dot 1x22Close quarters combat
Vortex VMX-3T MagnifierClose to mid-range shooting
Sig Sauer Romeo5 1x20Close quarters combat
Bushnell AR Optics 1-4x24Close to mid-range shooting
Trijicon ACOG 4x32 BACClose to mid-range shooting
Vortex Spitfire 3x Prism ScopeClose quarters combat
Primary Arms SLx 1x MicroPrismClose quarters combat
EOTech XPS2 Transverse Holographic Red Dot SightClose quarters combat
Trijicon RMR Type 2 1x65Close quarters combat
EOTech HWS EXPS 3 Circle Red Dot SightClose quarters combat

How you will use your AR-15 heavily affects what scope you choose to use. If you want to shoot at long range, the higher zoom scopes are better for your needs.

On the other hand, if your AR-15 is set up as a carbine for short to mid-range engagements, then getting a 1x red dot sight or LVPO is probably a better option.

Magnification Range

ScopeMagnification Range
Vortex Strike Eagle 1-6x241-6x
Leapers UTG 3-12x443-12x
Leupold VX-Freedom CDS 3-9x503-9x
Sig Sauer Tango6T 1-6x241-6x
ATN X-Sight 4K Pro Edition 3-14x503-14x
Vortex Viper PST Gen II 1-6x241-6x
Primary Arms PLx 6-30x566-30x
Primary Arms SLx 1-6x241-6x
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer1x
Vortex SPARC AR Red Dot 1x221x
Vortex VMX-3T Magnifier3x
Sig Sauer Romeo5 1x201x
Bushnell AR Optics 1-4x241-4x
Trijicon ACOG 4x32 BAC4x
Vortex Spitfire 3x Prism Scope3x
Primary Arms SLx 1x MicroPrism1x
EOTech XPS2 Transverse Holographic Red Dot Sight1x
Trijicon RMR Type 2 1x651x
EOTech HWS EXPS 3 Circle Red Dot Sight1x

The zoom range is another important factor to consider when buying any optic because you do not want to squint or get dizzy by using the wrong sight for the wrong situation.

Imagine using a 6x to 30x long-distance scope as a 1-6x CQB sight. You will get dizzy with all the movements and adjustments, plus lugging that extra weight around will make acquiring your target even slower.

Reticle Type

ScopeReticle Type
Vortex Strike Eagle 1-6x24AR-BDC3
Leapers UTG 3-12x44Wire Mil-Dot
Leupold VX-Freedom CDS 3-9x50CDS Duplex
Sig Sauer Tango6T 1-6x24FL-6 Hellfire
ATN X-Sight 4K Pro Edition 3-14x50Smart MIL Dot
Vortex Viper PST Gen II 1-6x24VMR-2 MOA, VMR-2 MRAD
Primary Arms PLx 6-30x56ACSS
Primary Arms SLx 1-6x24ACSS in .22 LR, 5.56, 5.45, and .308
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer2 MOA Dot
Vortex SPARC AR Red Dot 1x222 MOA Dot
Vortex VMX-3T MagnifierN/A
Sig Sauer Romeo5 1x202 MOA Dot
Bushnell AR Optics 1-4x24Drop Zone 223
Trijicon ACOG 4x32 BACIlluminated TA-31-C
Vortex Spitfire 3x Prism ScopeAR-BDC4
Primary Arms SLx 1x MicroPrismACSS Cyclops
EOTech XPS2 Transverse Holographic Red Dot Sight1-Dot, Circle 1-Dot, and Circle 2-Dot
Trijicon RMR Type 2 1x653.25 MOA dot
EOTech HWS EXPS 3 Circle Red Dot SightCircle 1-Dot, 2-Dot, and 4-Dot

This factor is heavily dependent on your personal preference and what the manufacturer offers. Some people prefer using MOA, while others prefer using MIL/MRAD as their units of measurement.

Whichever you prefer, you will need to decide between prioritizing aiming speed or precision. If you want to aim faster, pick a larger and clearer reticle, like a large red dot or a Duplex reticle.

On the other hand, if you want more precise lines on your reticle, try using a BDC reticle or reticles with MIL/MOA subtension marks for windage and elevation.

Optical Performance and Clarity

ScopeLens Coating
Vortex Strike Eagle 1-6x24Fully Multi-Coated
Leapers UTG 3-12x44Multi Emerald Coated Lenses
Leupold VX-Freedom CDS 3-9x50Twilight Light Management System
Sig Sauer Tango6T 1-6x24SpectraCoat
ATN X-Sight 4K Pro Edition 3-14x50N/A
Vortex Viper PST Gen II 1-6x24XR Fully Multi-Coated
Primary Arms PLx 6-30x56*no data
Primary Arms SLx 1-6x24Fully Multi-Coated
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerMulti-Coated
Vortex SPARC AR Red Dot 1x22Fully Multi-Coated
Vortex VMX-3T MagnifierFully Multi-Coated
Sig Sauer Romeo5 1x20SpectraCoat
Bushnell AR Optics 1-4x24Fully Multi-Coated
Trijicon ACOG 4x32 BACMulti-Coated
Vortex Spitfire 3x Prism ScopeFully Multi-Coated
Primary Arms SLx 1x MicroPrismFully Multi-Coated
EOTech XPS2 Transverse Holographic Red Dot SightN/A
Trijicon RMR Type 2 1x65True-Color, Multi-Coated Lens
EOTech HWS EXPS 3 Circle Red Dot SightN/A

Having a clear sight picture and accurate colors will help any shooter have the best chance of lining up their shot on target without having to squint or struggle to see it.

The best way to tell if optical performance is good is to check the size of the objective lens and to see the light transmission percentage of the scope. The higher the percentage, the better.

Eye Relief

ScopeEye Relief
Vortex Strike Eagle 1-6x243.5 in
Leapers UTG 3-12x443 - 3.4 in
Leupold VX-Freedom CDS 3-9x503.7 - 4.2 in
Sig Sauer Tango6T 1-6x244.1 in
ATN X-Sight 4K Pro Edition 3-14x503.5 in
Vortex Viper PST Gen II 1-6x243.8 in
Primary Arms PLx 6-30x563.3 - 4 in
Primary Arms SLx 1-6x243.3 - 3.5 in
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerUnlimited
Vortex SPARC AR Red Dot 1x22Unlimited
Vortex VMX-3T Magnifier2.2 in
Sig Sauer Romeo5 1x20Unlimited
Bushnell AR Optics 1-4x243.5 in
Trijicon ACOG 4x32 BAC1.5 in
Vortex Spitfire 3x Prism Scope2.6 in
Primary Arms SLx 1x MicroPrism3.6 in
EOTech XPS2 Transverse Holographic Red Dot SightUnlimited
Trijicon RMR Type 2 1x65Unlimited
EOTech HWS EXPS 3 Circle Red Dot SightUnlimited

Having a long eye relief is a big advantage to any sight because it allows for more flexibility in how far your eye can be to the eyepiece to see clearly.

Getting a scope with long eye relief is more important on CQB-focused sights like red dots, holo sights, and reflex sights that are 1x. This is because good eye relief can make aiming faster by giving you more peripheral awareness.

Adjustments (Turrets) for Windage and Elevation

ScopeTurretsAdjustment Click Value
Vortex Strike Eagle 1-6x24Capped0.5 MOA adjustment per turret click
Leapers UTG 3-12x44Capped0.25 MOA adjustment per turret click
Leupold VX-Freedom CDS 3-9x50Capped0.25 MOA adjustment per turret click
Sig Sauer Tango6T 1-6x24Capped0.2 MIL adjustment per turret click
ATN X-Sight 4K Pro Edition 3-14x50DigitalN/A
Vortex Viper PST Gen II 1-6x24Capped0.5 MOA adjustment per turret click
Primary Arms PLx 6-30x56Exposed0.1 MIL adjustment per turret click
Primary Arms SLx 1-6x24Capped0.5 MOA adjustment per turret click
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerCapped0.5 MOA adjustment per turret click
Vortex SPARC AR Red Dot 1x22Exposed1 MOA adjustment per turret click
Vortex VMX-3T MagnifierN/AN/A
Sig Sauer Romeo5 1x20Exposed1 MOA adjustment per turret click
Bushnell AR Optics 1-4x24Exposed0.1 MIL adjustment per turret click
Trijicon ACOG 4x32 BACCapped0.25 MOA adjustment per turret click
Vortex Spitfire 3x Prism ScopeExposed1 MOA adjustment per turret click
Primary Arms SLx 1x MicroPrismExposed1 MOA adjustment per turret click
EOTech XPS2 Transverse Holographic Red Dot SightExposed0.5 MOA per turret click
Trijicon RMR Type 2 1x65Exposed1 MOA adjustment per turret click
EOTech HWS EXPS 3 Circle Red Dot SightExposed0.5 MOA per turret click

The windage and elevation turrets are important to how a scope functions because they help compensate for how far a bullet drops over large distances and how much the wind can affect the shot.

Exposed turrets are usually easier and quicker to adjust but can be accidentally moved in the heat of the moment. Capped turrets require more force to turn but are harder to accidentally nudge.

Illumination

ScopeIlluminated Reticle?
Vortex Strike Eagle 1-6x24Yes
Leapers UTG 3-12x44Yes
Leupold VX-Freedom CDS 3-9x50No
Sig Sauer Tango6T 1-6x24Yes
ATN X-Sight 4K Pro Edition 3-14x50No
Vortex Viper PST Gen II 1-6x24Yes
Primary Arms PLx 6-30x56Yes
Primary Arms SLx 1-6x24Yes
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerYes
Vortex SPARC AR Red Dot 1x22Yes
Vortex VMX-3T MagnifierN/A
Sig Sauer Romeo5 1x20Yes
Bushnell AR Optics 1-4x24No
Trijicon ACOG 4x32 BACNo (tritium, fiber optics)
Vortex Spitfire 3x Prism ScopeYes
Primary Arms SLx 1x MicroPrismYes
EOTech XPS2 Transverse Holographic Red Dot SightYes (holographic)
Trijicon RMR Type 2 1x65Yes
EOTech HWS EXPS 3 Circle Red Dot SightYes (holographic)

Reticle illumination is a very important feature if you are going to be shooting in low-light situations. It helps you see the center of your reticle easier to place it on top of your target.

The ideal illumination has multiple brightness options, works with night vision, and is paired with an etched reticle so that the sight can still function even if the battery runs out.

Focal Plane (FFP or SFP)

ScopeFocal Plane
Vortex Strike Eagle 1-6x24Second Focal Plane (SFP)
Leapers UTG 3-12x44Second Focal Plane (SFP)
Leupold VX-Freedom CDS 3-9x50Second Focal Plane (SFP)
Sig Sauer Tango6T 1-6x24Second Focal Plane (SFP)
ATN X-Sight 4K Pro Edition 3-14x50N/A
Vortex Viper PST Gen II 1-6x24Second Focal Plane (SFP)
Primary Arms PLx 6-30x56First Focal Plane (FFP)
Primary Arms SLx 1-6x24Second Focal Plane (SFP)
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerN/A
Vortex SPARC AR Red Dot 1x22N/A
Vortex VMX-3T MagnifierN/A
Sig Sauer Romeo5 1x20N/A
Bushnell AR Optics 1-4x24Second Focal Plane (SFP)
Trijicon ACOG 4x32 BACN/A
Vortex Spitfire 3x Prism ScopeN/A
Primary Arms SLx 1x MicroPrismN/A
EOTech XPS2 Transverse Holographic Red Dot SightN/A
Trijicon RMR Type 2 1x65N/A
EOTech HWS EXPS 3 Circle Red Dot SightN/A

First focal plane scopes are better for scopes with wide zoom ranges because the size of the reticle changes with the zoom. This makes it easier to see hash marks at low zoom.

Second focal plane scopes are usually better on scopes with shorter zoom ranges, like LPVOs. This is because the reticle stays the same size regardless of your zoom level.

Durability and Weather Resistance

ScopeWater Resistant?Shockproof?Fogproof?
Vortex Strike Eagle 1-6x24YesYesYes
Leapers UTG 3-12x44YesYesYes
Leupold VX-Freedom CDS 3-9x50YesYesYes
Sig Sauer Tango6T 1-6x24Yes (IPX-8)*no dataYes
ATN X-Sight 4K Pro Edition 3-14x50NoNoNo
Vortex Viper PST Gen II 1-6x24YesYesYes
Primary Arms PLx 6-30x56YesYesYes
Primary Arms SLx 1-6x24Yes*no dataYes
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerYes (up to 150 ft)Yes*no data
Vortex SPARC AR Red Dot 1x22YesYesYes
Vortex VMX-3T MagnifierYesNoYes
Sig Sauer Romeo5 1x20Yes (IPX-7)No
Bushnell AR Optics 1-4x24Yes (IPX-7)YesYes
Trijicon ACOG 4x32 BACYesYesYes
Vortex Spitfire 3x Prism ScopeYesYesYes
Primary Arms SLx 1x MicroPrismYes (IP67)NoYes
EOTech XPS2 Transverse Holographic Red Dot SightYes (up to 10 ft)NoYes
Trijicon RMR Type 2 1x65Yes (up to 66 ft)YesYes
EOTech HWS EXPS 3 Circle Red Dot SightYes (up to 33 ft)NoYes

Weather resistance is an important factor to consider when it comes to hunting scopes and tactical-focused optics. You will not have the time or luxury of hiding under shade when you are prowling the great outdoors.

Try looking for sights that are waterproof, fogproof, and shockproof. This will cover all bases for any accidents or weather conditions that the sight will have to endure.

Mounting Capability and Options

ScopeMount TypeTube Diameter
Vortex Strike Eagle 1-6x24Ring30 mm
Leapers UTG 3-12x44Picatinny30 mm
Leupold VX-Freedom CDS 3-9x50Ring25.4 mm (1 in)
Sig Sauer Tango6T 1-6x24Ring30 mm
ATN X-Sight 4K Pro Edition 3-14x50Ring with Picatinny rail50 mm
Vortex Viper PST Gen II 1-6x24Ring30 mm
Primary Arms PLx 6-30x56Ring34 mm
Primary Arms SLx 1-6x24Ring30 mm
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerPicatinnyN/A
Vortex SPARC AR Red Dot 1x22Picatinny (absolute co-witness mount)N/A
Vortex VMX-3T MagnifierPicatinny (side flip mount)N/A
Sig Sauer Romeo5 1x20Picatinny (low profile)N/A
Bushnell AR Optics 1-4x24Ring30 mm
Trijicon ACOG 4x32 BACTA51 MountN/A
Vortex Spitfire 3x Prism ScopeStandardN/A
Primary Arms SLx 1x MicroPrismPicatinnyN/A
EOTech XPS2 Transverse Holographic Red Dot Sight1″ Weaver or MIL-STD-1913 railN/A
Trijicon RMR Type 2 1x65Trijicon Mounting StandardN/A
EOTech HWS EXPS 3 Circle Red Dot Sight1″ Weaver or MIL-STD-1913 railN/A

Many sight options on this list come with mounting solutions included in the box. This is ideal because the manufacturer has specifically built it for the optic, which will fit it like a glove and mount your weapon with minimal effort.

However, if it does not come in the box, check the tube diameter or the size of your optic. This determines whether you can only use it on your long-range focused AR-15 or can interchange it with your pistols or home-defense shotguns.

Weight and Size

ScopeWeightLength
Vortex Strike Eagle 1-6x2418.5 oz (524.5 g)10.5 in
Leapers UTG 3-12x4423.1 oz (654.9 g)11.1 in
Leupold VX-Freedom CDS 3-9x5014.6 oz (413.9 g)12.1 in
Sig Sauer Tango6T 1-6x2420.9 oz (592.5 g)16 in
ATN X-Sight 4K Pro Edition 3-14x5033.6 oz (952.5 g)13.8 in
Vortex Viper PST Gen II 1-6x2422.7 oz (643.5 g)10.9 in
Primary Arms PLx 6-30x5638.2 oz (1083 g)15.6 in
Primary Arms SLx 1-6x2416.9 oz (479.1 g)10 in
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer11.6 oz (328.9 g)5.2 in
Vortex SPARC AR Red Dot 1x227.5 oz (212.6 g)2.9 in
Vortex VMX-3T Magnifier11.9 oz (337.4 g)4.3 in
Sig Sauer Romeo5 1x205.1 oz (144.6 g)2.5 in
Bushnell AR Optics 1-4x2418 oz (510.3 g)9.4 in
Trijicon ACOG 4x32 BAC9.9 oz (280.7 g)5.8 in
Vortex Spitfire 3x Prism Scope9.3 oz (263.7 g)3 in
Primary Arms SLx 1x MicroPrism7 oz (198.5 g)2.5 in
EOTech XPS2 Transverse Holographic Red Dot Sight8 oz (226.8 g)3.8 in
Trijicon RMR Type 2 1x651.2 oz (34 g)1.8 in
EOTech HWS EXPS 3 Circle Red Dot Sight11.2 oz (317.5 g)3.5 in

The longer zoom scopes packed with multiple lenses will be heavier and larger than sights like the Trijicon RMR reflex. This is due to the physical limitations of long-range scopes.

If you plan to carry around your AR-15 for hours on end, weight and size are a big consideration if you do not want to add extra pounds that you will have to lug around.

Budget and Price Range

ScopePrice
Vortex Strike Eagle 1-6x24$389
Leapers UTG 3-12x44$144
Leupold VX-Freedom CDS 3-9x50$349
Sig Sauer Tango6T 1-6x24$1499
ATN X-Sight 4K Pro Edition 3-14x50$609
Vortex Viper PST Gen II 1-6x24$528
Primary Arms PLx 6-30x56$1449
Primary Arms SLx 1-6x24$339
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer$482
Vortex SPARC AR Red Dot 1x22$139
Vortex VMX-3T Magnifier$168
Sig Sauer Romeo5 1x20$139
Bushnell AR Optics 1-4x24$185
Trijicon ACOG 4x32 BAC$1199
Vortex Spitfire 3x Prism Scope$339
Primary Arms SLx 1x MicroPrism$269
EOTech XPS2 Transverse Holographic Red Dot Sight$569
Trijicon RMR Type 2 1x65$459
EOTech HWS EXPS 3 Circle Red Dot Sight$638

This list clearly shows that you don’t need to drop over $1,500 just to get a decent scope. There are multiple options for good sights that are budget-oriented.

The best AR-15 scope under $200 will not be the exact same quality as one that’s $3,000, but one with a good value-for-money brand will definitely punch above its weight when it comes to construction and features.

Warranty and Customer Support

ScopeWarranty
Vortex Strike Eagle 1-6x24Vortex VIP (unlimited lifetime warranty)
Leapers UTG 3-12x44Leapers Lifetime Warranty
Leupold VX-Freedom CDS 3-9x50Leupold Lifetime Guarantee (lifetime warranty)
Sig Sauer Tango6T 1-6x24SIG SAUER Electro-Optics Infinite Guarantee (limited lifetime warranty)
ATN X-Sight 4K Pro Edition 3-14x50ATN Two Year Warranty
Vortex Viper PST Gen II 1-6x24Vortex VIP (unlimited lifetime warranty)
Primary Arms PLx 6-30x56‎Limited lifetime warranty
Primary Arms SLx 1-6x24‎Limited lifetime warranty
Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and SpacerLimited 10-year warranty
Vortex SPARC AR Red Dot 1x22Vortex VIP (unlimited lifetime warranty)
Vortex VMX-3T MagnifierVortex VIP (unlimited lifetime warranty)
Sig Sauer Romeo5 1x20Electronic Component Limited 5 Year Warranty
Bushnell AR Optics 1-4x24Bushnell Lifetime Ironclad Warranty
Trijicon ACOG 4x32 BACLimited 10-year warranty
Vortex Spitfire 3x Prism ScopeVortex VIP (unlimited lifetime warranty)
Primary Arms SLx 1x MicroPrism‎Limited lifetime warranty
EOTech XPS2 Transverse Holographic Red Dot SightEOTech Prestige Warranty
Trijicon RMR Type 2 1x65Limited 5-year warranty
EOTech HWS EXPS 3 Circle Red Dot SightEOTech Prestige Warranty

In an ideal world, any sight you buy will work 100% of the time. However, factory defects and shipping damage are things we have to deal with in the real world.

When buying a scope, check reviews of the manufacturer and see how extensive their warranty is. Other scope owners and reviewers online can give you an idea of how easy or hard it is to have a scope replaced, returned, or refunded.

Frequently Asked Questions (FAQs)

After learning more about the best AR-15 rifle scope options, you might have questions related to rifle optics. I have answered the most commonly asked questions here.

How to Mount a Scope on an AR-15?

To properly mount a scope on your AR-15, you first need to get the appropriate mounting rings for your rifle. Check first if your rifle uses Weaver, M-LOK, Picatinny, or other types of rails/mounting systems.

After checking and buying the appropriate mount, you should first mount the rifle in a secure, upright position. Then, read the installation guide for specific instructions on how to tighten it and lock it into place.

What Is the Proper Height for an AR-15 Scope?

The proper height of an AR-15 rifle scope is an inch and a half, or 1.5 inches. If you mount it too low, you will smash your face onto the cheek weld.

If you mount it too high, you will be straining your neck to see the sight picture due to a lack of cheek weld.

How Much Magnification Is Recommended for an AR-15 Scope?

A good medium-range scope has a maximum zoom range of 5x – 9x magnification. This is the recommended magnification that sits between close-range and long-range zoom.

Final Thoughts on the Best AR-15 Scopes

Choosing the best scope can be challenging, especially in this saturated rifle optic market. There are different zoom ranges, types of optics, features, and price points to consider.

My personal recommendation for the best AR-15 scope is the Vortex Optics Strike Eagle 1-6×24 because of its ideal zoom range and many features for the great price point.

The most important thing to remember is that it is mostly up to personal preference. What you value in an AR scope for your use case can vastly differ from another shooter’s.

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