5 Best Red Dot Sights Under 100: Budget, Affordable

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10 Best Red Dot Sights Under 100: Budget, Affordable

When it comes to red dot sights, there are many models with various price tags available for purchase.

That is why budget-minded target shooters consider getting a red dot sight under $100. Such a red dot sight would provide their users with optimized target shooter experiences on the field.

This article will show you the specifications of all the highly affordable red dot sights on the market. Just take a good look at our reviews below and you should be able to secure the best red dot under $100 in no time at all.

IMPORTANT NOTE: Almost all red dot sights listed in this article are subject to price point fluctuations from time to time. As a result, it’s not uncommon for some of the red dot sights’ acquisition costs to slightly exceed $100 during certain periods.

Best Budget
Ade Advanced Optic Crusader 8
Best Overall
Sightmark Ultra Shot Plus
Best Budget Pick
Dagger Defense DDHB

5 Best Red Dot Sights Under $100

1. Sightmark Ultra Shot Plus

Best Overall



  • Dimension: 5.4 x 3.4 x 2.2 Inches     
  • Weight: 0.23 Pounds

Boasting a versatile and lightweight design, Sightmark Ultra Shot Plus is one of the best red dot sights under $100 in terms of all-around quality.

Due to its convenient adjustable brightness settings, the Sightmark red dot sight would let hunters acquire and observe potential targets in any lighting condition with relative ease. Light transmission is convenient with the brightness settings.

Apart from brightness settings, there are 5 levels available at your disposal; the first three are for indoor use, while the latter two are for the outdoors.

Moreover, you could change the red dot sight reticle color between red or green to suit your target shooting style and personal preferences. 

Powered by a standard camera battery, Sightmark Ultra Shot Plus could run continuously for 2,000 hours, which is impressive for a product at this price range.

To maximize the battery life, the Sightmark sight would shut down automatically after an hour without use.

Featuring a protective shield in addition to rugged aluminum alloy housing, the red dot sight should be able to handle harsh working environments. The housing makes it more secure and durable.

In terms of installation, the red dot sight could be attached and removed at a moment’s notice, thanks to its quick-detach mount. It’s definitely and advantage.


  • Reasonable price and value for money
  • Adjustable intensity 
  • Good durability
  • Easy to use design


  • May get blurry 
  • Inconsistent performance 

2. Ade Advanced Optic Crusader 8

Budget Red Dot SightAde


  • Dimensions: 4.25 x 2.08 x 2.44 Inches     
  • Weight: 0.95 Pounds

Possessing unlimited eye relief and straightforward operations, Ade Advanced Red Dot Optic Crusader 8 truly perform with distinctions in rapid, close-range discharges.

The Ade red dot sight is designed with 4 reticle options and 5 brightness settings, which provide the shooter with a lot of tactical flexibility.

Aside from brightness settings, each of the red dot sight reticles is available in red or green, so you could pick whatever matches your eyes.

While the red dot sight’s magnification is only 1x, you could always use a magnifier in case you need to engage targets at long distances. The magnification will work nonetheless.

The sight is also compatible with a wide variety of night vision goggles in circulation. It’s a great tool to enhance overall night vision if the variety of brightness settings aren’t enough.

Instead of using standard batteries like other red dot sights, Ade Advanced Optic Crusader 8 utilizes an integrated rechargeable energy bank. It stands out from other red dots under 100.

The Ade sight is accompanied by a charging cable and an indicator light that keeps you up to date about the charging process.

About its mounting, the sight should fit pretty much all 1-inch Picatinny and Weaver rails. As the sight has unlimited eye relief, it could be mounted far forward without experiencing performance drops on most rifles. 


  • Good quality mounting and durability
  • Highly affordable 
  • User-friendly controls and design
  • Night vision capabilities


  • Some zero issues 
  • Quality control needs to be improved 

3. Dagger Defense DDHB

Best Ergonomic Design



  • Dimension: 3.1 x 1.1 x 2.3 Inches     
  • Weight: 0.64 Pounds

Want to get a stable and ergonomic sight on your gun? Then you should check out Dagger Defense DDHB. Boasting a free-floating zero set screw, you could easily secure the Dagger Defense sight to ensure that it holds its setting.

You could only change the sight’s elevation and windage using hex wrenches, though, so the adjustment process would take some time. Fortunately, the sight’s informative signs should tell you precisely how to change based on target movements. 

One innovative feature of Dagger Defense DDHB is that it combines the color selector, the fade adjustment, and the battery compartment into a single part. As a result, you could access and manipulate various aspects of the Dagger Defense sight without having to move your hand all over the housing.

The sight runs on a CR20132 battery, which you receive along with the Allen wrenches once you make the purchase. Most of the time, you should have an easy time installing the sight on standard sets of mounting rails. 

This is one of the most unique red dots under 100. Plus, it has a good optic option as well.


  • Deliver high contrast images 
  • Responsive customer service 
  • Work great on multiple weapons 
  • Competent optic settings


  • Some products fail to hold zero 
  • Less than ideal quality control  

4. Field Sport Red Green Dot Reflex Sight



  • Dimension: 3.2 x 1.2 x 2 Inches     
  • Weight: 0.25 Pounds

Waterproof, shockproof, and fog proof, Field Sport Red Dots and Green Reflex Sight is a great product when it comes to strength. The commendable endurance/resistance of the Field Sport red dots sight allows it to be used to good results in challenging conditions.

Using high-grade aluminum alloys, the red dots sight would be able to handle pretty much everything you could throw at it. If you are looking for a red dots sight that lets you land shots on fast-moving targets, you must take a look at this quality model. 

Featuring a corrected parallax and a wide field of view, Field Sport Red and Green Reflex Sight is highly sought after by many budget-minded gun owners.

Due to the presence of the convenient built-in Picatinny mount base, the Field Sport sight could be installed in a blink of an eye. As the sight is extremely light, you could mount it on air guns, crossbows, and so on without impairing the platform balance, optic, and target shooting stability.

The sight uses a CR2032 lithium battery as its energy source so that you could secure replacements at a moment’s notice. It’s one of the best cheap rechargeable red dots under 100.


  • Compact and lightweight unit
  • Excellent battery life 
  • Compatible with numerous firearms    
  • Low price


  • Could not hold zero well 
  • Several operation problems are reported 

5. CVLIFE Reflex Sight with Red and Green Reticle



  • Dimension: 3.22 x 1.29 x 0.8 Inches     
  • Weight: 0.28 Pounds

Designed to engage fast-moving targets at close distances, CVLIFE Reflex Sight with Red And Green Reticle earns many praises and good reviews from competitive shooters.

With robust anti-glare reflective coated lenses, the CVLIFE tactical red dot sight possesses good optic clarity from dawn to dusk. We recommend it if you need good optic lenses and clarity item.

With 4 dual green/red reticle patterns and 5 brightness settings for each color, the sight fits any shooter’s demands in need of something flexible.

Apart from the main brightness settings, the knob style controls of the red dots sight reticle can also be manipulated. You can change the intensity of the dots in seconds and without too much effort. 

In terms of adjustment, you could make changes to the elevation and windage option of CVLIFE Reflex Sight With Red or Green Reticle at will. The CVLIFE sight option could only be changed by using Allen wrenches, though, so it could take a bit of time.

In exchange, it’s doubtful that the red dots sight setting would change without human interactions. You don’t have to readjust the sight if you bump it by mistake.

One more thing is that the sight is powered by CR2032 batteries, which you could find in every convenience store. That’s also why it’s one of the best cheap sights.


  • Suits all 20mm railings
  • Wide field of view 
  • Performs well for the price point
  • Good unit for target shooting


  • Unable to hold zero consistently 
  • There are complaints about blurred images

Ultimate Guide to Buying a Red Dot Sight Under $100

Take The Reticle Into Consideration

As you already know, the reticle of the best cheap standard red dot sights is an illuminated red dot, which improves your accuracy in low light conditions.

The reticle is important to accuracy because it helps with the aim. The better the reticle, the better your accuracy.

If the dot is too big, it’s challenging to engage at close distances and do target acquisition. On the other hand, if the red dot reticles are too small, you would not see them clearly from a distance.

Just make sure to be careful and to always consider overall reticle size. Pick a size that suits your preferences and capabilities.

In addition to that, a red dot sight may offer optional colors and patterns to suit the needs and requirements of different shooters. All you have to do to grab the model that you feel most comfortable with. 

Think About The Battery Power

The illuminated reticle of red dot sight is sustained by the sight battery, lasting between a few hundred and a few thousand hours. There are some that can actually last for up to 50 000 hours!

It goes without saying that once the battery is depleted, the operation of the sight would inevitably suffer serious setbacks.

Therefore, battery life is among the most important factors to consider while shopping for the best red dot sight under $100. The last thing that any shooter ever wants to experience is to see the red dot sight run out of juice in a critical moment.

Aside from battery life, make sure that the variant you like let you remove depleted batteries and then put in new ones without much difficulty. 

Exam and Assess The Durability

You don’t have to be a veteran shooter to know that it’s essential to take good care of your sights at all times. Given the delicate nature of red dot sights, you must stay concentrated and pay attention.

That being said, it’s a bad idea to buy a sight that could be cracked by the slightest impact. At the very least, you have to get a sight that could take a couple of bumps without breaking apart.

Moreover, to hunters and people that tend to shoot in the outdoors, the sight needs to withstand elements and weather. Generally speaking, a red dot sight for outdoor uses should be waterproof, fog proof, and shockproof.  

Get something built to last so that you can enjoy value for your hard-earned money.

Assess The Sight Mounting Compatibility

Not all red dot sight could be mounted on any gun. Many variants are designed to mount on specific types of firearms. If you attempt to mount sights on incompatible platforms, your aim would likely be off, and your shots would land off the aim.

That means you must take into account your weapon loadout before making the final decision. Getting a high-quality red dot sight that proves incompatible with your gun is nothing but a waste of money.

Fortunately, you should reduce the number of red dot sight you have to check by using the mounting compatibility as a criterion. 

Look Over The Adjustment Mechanism

Most red dot sights available on the market permit you to make changes to their elevation and windage setting. Usually, the adjustment value per click varies around 0.25 MOA, 0.5 MOA, and alike so choose the one that fits your demands.

The smaller the sight increments and decrements are, the easier it becomes to make precise elevation/ windage adjustment. You should prioritize models with knob covers or similar features to ensure that the sight settings would not change without your knowledge. 

Ideal Profile: Weight And Size

A cumbersome and awkward red dot sight could compromise your weapon’s balance; hence, you have to keep an eye on the sight profile. You have to know whether you could comfortably handle your gun with the sight attached.

For example, the reaction time is vital to home defense firearms: you don’t want to get stuck in house invasion scenarios with bulky sights. If you’re a hunter, dragging yourself through thick branches and dense brushes with a heavy sight on your gun is tedious. 

Mounting The Red Dot Sight

Modern-day rifles tend to have a rail system (Picatinny or Weaver) that runs across on top of their receiver. The rail would serve as the anchor point for red dot sight and other accessories.

Sights designed for Weaver may fit on Picatinny rails but not vice versa, so select appropriate products. For shotguns and handguns, you could swap the original iron sight with the red dot sight or utilize a rail mounting setup like tactical rifles.

In any case, make sure that you secure the sight properly, or the recoil would throw it out of alignment.

If you need more options for the best cheap sight, then check out our recommendations for the Best Cheap Reflex Sights under $100. You can find a reflex sight under 100 so it’s affordable like the red dot ones.

About the author

Christopher Wade

Christopher Wade

Christopher Wade is a true outdoorsman. After spending most of his career as a firearms expert and instructor in Nebraska, he retreated to the great outdoors to enjoy retirement.

Christopher’s expertise in handling firearms and hunting gear are what propelled him to create the Shooting Mystery blog. He hopes for all readers to gain useful and practical knowledge for enjoying their time outdoors.