Best Red Dot Sight Under 100$ – Best bang for your bug

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When it comes to red dot sights, there are a lot of models with various price tags available for purchase. Even if you only have 100$ or so, the market still got a couple of sights that match you tight wallet. At the under one hundred dollars price range, you would not run into premium-class products but it’s possible to secure a solid model. That is why more and more budget-minded shooters around the globe consider getting the best red dot sight under 100$. Such a sight would provide their users with optimized shooting experiences as well as years of service on the field.

You don’t know much about red dot sight and could use some recommendations? If that is the case, you come to the right place. This article here would show you the specifications and reviews of several highly affordable red dot sights on the market. In addition to that, a comprehensive shopping guide is also present which you could use to make a sensible purchase. Take a good look at the provided information 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 subjected to price fluctuations from time to time. As a result, it’s not uncommon for the acquisition cost of some of the sights down below to exceed 100$ in certain periods of time.


Top 10 Best Red Dot Sight Under 100$ On The Market – 2018 Edition

1/ Sightmark Ultra Shot Plus

  • 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 term of all-around performance. Due to its convenient variable brightness settings, the Sightmark sight would let hunters acquire and observe potential targets in any lighting condition with relative ease. There are 5 intensity levels available at you disposal; (1, (2), and (3) are for indoor uses while (4) and 5 are for the bright outdoor. Moreover, you could change the sight reticle color between red and green to suit your 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 on the field, the Sightmark sight would shut down automatically after an hour without use. Featuring protective shield in addition to rugged aluminum alloy housing, the sight should be able to handle harsh working environments. In term of installation, the sight could be attached and removed at moment notice thanks to its quick-detach mount.


  • Reasonable price
  • Adjustable intensity  
  • Well made and tough


  • May get blurry
  • Inconsistent performance

2/ Ade Advanced Optics Crusader 8

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

Possessing unlimited eye relief and straightforward operations, Ade Advanced Optics Crusader 8 truly perform with distinctions in rapid, close-range discharges. The Ade sight is designed with 4 reticle options and 5 brightness settings which prove shooter with a lot of tactical flexibility. Furthermore, each of the sight reticles is available in red and green so you could pick whatever matches your eyes.  While the magnification of the sight is only 1x, you could always use a magnifier in case you need to engage targets at long distances. The sight is also compatible with a wide variety of night vision goggles in circulation.

Instead of using standard batteries like other red dot sights, Ade Advanced Optics Crusader 8 utilizes an integrated rechargeable energy bank. The Ade sight is accompanied by a charging cable as well as an indicator light that keep 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.


  • Quality mounting
  • Highly affordable
  • User-friendly controls


  • Some zero issues are noted  
  • Quality control needs to be improved

3/Dagger Defense DDHB

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

Want to get mount 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 on the field. You could only change the elevation and windage setting of the sight using hex wrenches though so the adjustment process would definitely take some time. Fortunately, the informative signs on the sight should tell you precisely how to change the setting base 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. For most of the time, you should have an easy time installing the sight on standard sets of mounting rails.


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


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

4/ Field Sport Red And Green Reflex Sight

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

Waterproof, shockproof and fogproof, Field Sport Red and Green Reflex Sight is a great product when it comes to strength. The commendable endurance/resistance of the Field Sport sight allows it to be used to good results in challenging conditions. Using high-grade aluminum alloys, the sight would be able to handle pretty much everything you could throw at it. If you are looking for a sight that let you land shots on fast-moving targets, you must take a look at this quality model.

Featuring corrected parallax and 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 and shooting stability. The sight uses a CR2032 lithium battery as its energy source so you could secure replacement batteries at moment notice.


  • Compact and lightweight
  • Excellent battery life
  • Compatible with numerous firearms     


  • 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 earn many praises from hunters and competitive shooters. Utilizing robust anti-glare reflective coated lenses, the CVLIFE red dot sight possesses respectable optical clarity from dawn to dusk. With 4 dual green/red reticle patterns and 5 brightness settings for each color, the sight fit the demands of any shooter in need of something flexible. The knob style controls of the sight reticle and intensity could be manipulated in seconds without requiring too much effort.  

In term of adjustment, you could make changes to the elevation and windage setting of CVLIFE Reflex Sight With Red And Green Reticle at will. The setting of the CVLIFE sight could only be changed through the use of Allen wrenches though so it could take a bit of time. In exchange, it’s highly unlikely that the sight setting would change without human interactions. You don’t really have to readjust the sight if you bump it by mistake. The sight is powered by CR2032 batteries which you could find in every convenience store.


  • Suit all 20mm rails
  • Wide field of view
  • Perform well for the price  


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

Acquiring The Best Red Dot Sight Under 100$: The Ultimate Guide

  • Take The Reticle Into Consideration

As you already figure out, the reticle of standard red dot sights is an illuminated red dot which improves your accuracy in low light conditions. If the dot is too big, it’s difficult to engage targets at close distances.  On the other hand, if the dot is too small, you would not be able to see it clearly on distant targets so be careful.

In addition to that, a red dot sight may offer optional colors and patterns in order 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 Life

The illuminated reticle of red dot sight is sustained by the sight battery which could last between a few hundred and a few thousand 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 model 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 impacts. 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 weathers. Generally speaking, a red dot sight for outdoor uses should be waterproof, fogproof and shockproof.   

  • Assess The Sight Mounting Compatibility

Needless to say, not all red dot sight could be mounted on any gun, many models are designed to mount on specific types of firearms. If you attempt to mount sights on incompatible platforms, it’s highly likely your aim would be off and your shots would land off targets. 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 be able to 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 nowadays 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 fit your demands. The smaller the sight increments and decrements are, the easier it becomes for you to make precise elevation/ windage adjustment. You should prioritize models that have knob covers or similar features in order 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 the balance of your weapon, hence, you have to keep an eye on the sight profile. You have to know whether you could comfortably handle your weapon with the sight attached. For example, the reaction time is important to home defense firearms: you don’t want to get stuck in house invasion scenarios with bulky sights. In the case you are a hunter, dragging yourself through thick branches and dense brushes with a heavy sight on your gun is definitely tedious.

Mounting The Red Dot Sight

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

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.