8 Best Red Dot for AR 15 [UNDER 100]

Best Red Dot for AR 15 Under $100: Maximize Your Precision

Are you looking for an optic for your AR 15? Well, you can use different optics for your AR 15 depending on what you are planning to use it for. If you are going for a close range hunting or shooting than the best thing would be to go for a Red Dot Sight.

Although they were originally used for military purposes but now they are used for any short range shooting. Red dot sights will help you get a faster response being accurate most of the time.

Due to their extreme reliability, you should always go for a quality dot sight. If you are on a budget then why don’t you check out this awesome list of Red Dot Sights for AR 15 under $100?

Not to brag but my personal favorite on the list is Bushnell Trophy TRS-25 Red Dot Sight for all of its cools features.


Take a loot at Our Picks


What Should You Consider Before Buying?

If you want to buy the perfect red dot sight for your AR 15, you need to look into a lot of features. A good red dot sight will have the perfect balance of all exclusive features.

Your AR 15 rifle deserves the best quality. That’s why you should always go for quality instead of quantity.

Want to know just what you need to look for? Just look at this list and you’ll know just what to do.

# Optical Coatings

The very first thing you need to consider is the optical lens quality. Optical lens quality hugely depends on the different coatings. High-quality lenses like ED or HD lenses would definitely be a plus point here. These lenses provide the best output in any situation for a AR 15.

Even though having extra fully multi-layer coatings are also a great option here. Fully multi-coated lenses improve the quality of your vision by decreasing lens reflections.

Extra features like waterproof, fog proof will ensure the durability of your red dot sight. Well, you do need to invest in a longer lasting red dot if you want to get the full experience, right?

# Brightness Adjustments

Another great feature you need to always look into before buying a red dot sight is the brightness adjustments. It’s actually the ability to adjust the intensity of the dot manually. The wider the range the better.

It means you can adjust the intensity of any lighting situation. It makes shooting in low light situations or at night time really easier. The best part is that you can adjust it back whenever you are shooting in broad daylight.

It would definitely come in handy while you are using your AR 15 for a short range hunting session.

Usually, most of the dot sights come with a wide range of adjustments. But still, you should always check out how many environments it covers. A lower adjustment range will cause serious issues while shooting in the dark.

Red Dot Sights AT3 Tactical Brightness Adjustments
Red Dot Sight AT3 Tactical Brightness Adjustment – image credit at3tactical.com

# MOA Dot Size

The MOA Dot size refers to the size of the red dot. Most importantly, a bigger dot will defiantly ensure an easy target, to begin with. With bigger dot size you’ll be able to hit any target with your AR 15 without any problems or whatsoever.

You should always go for at least 2MOA dot size. Anything greater than this is undoubtedly a better choice but less than this will surely hurt your performance.

That’s why while choosing the perfect one go for 2MOA or more.

BSA Tactical MOA Red Dot Sight Size
BSA Tactical MOA Red Dot Sight Size – image credit gunsumerreports.com

# Battery

AR 15 rifles are the most popular choice when it comes to longer hunting sessions. That’s why while choosing a red dot sight, you need to look for a longer lifetime. This can undoubtedly cause a huge deal if you don’t invest in a longer battery life. I’m sure you’ll be using your AR 15 for a longer session and this feature will defiantly be a lifesaver.

Most of the time shooters forget to turn off their dot sight and then end up draining excess battery life. That’s why a longer battery life will help you avoid any unnecessary situations and go on with a hunt without any issues. Pretty neat, right?

# Eye Relief

Having a proper eye relief or eye protection will surely help you in when you’ll be hunting for a long time with your AR 15. You don’t want to spend your money on it and then end up straining your eyes now, do you? You always need to look for comfort whenever you are looking for the best red dot sight.

Not to mention, this feature will be a lifesaver for eyeglass users. A greater eye relief feature or adjustable setting is what you need here. Always make sure your dot sight comes with it.


Reviews of Best Red Dot for AR 15 Under $100

1. Bushnell Trophy TRS-25 Red Dot Sight Review – TOP PICK

Extremely lightweight for perfect aiming

If you’re looking for an extremely lightweight red dot sight for your AR 15 then Bushnell Trophy TRS-25 Red Dot Sight Riflescope would be the perfect one for you. This awesome scope comes with a mounted LED inside to provide the red dot reticle.

With the 3MOA dot size, you’ll be able to hit your target accurately every time. A perfect dot size to provide the optimal clarity. The multicoated lens provides exceptional optical clarity which you can only find in high priced optics.

Bushnell Trophy TRS-25 Red Dot Sight Riflescope offers a wide range of brightness adjustments starting from 0 to 11. These adjustments will help you shoot in any situation, even in night time.

The best part is that it’s highly durable having extra features like waterproof and fog proof. Thinking about the recoils? Don’t worry about this wonderful dot sight you’ll be able to go up to several thousand rounds without any hassle or whatsoever.

Want a longer battery life? The scope comes with a CR2032 battery and will go up to 3000 hours!

Bring more comfort to the shooting height –

With UTG Med-pro Compact Riser Mount and UTG Hi-Profile Compact Riser Mount. I know how sometimes it gets difficult to mount a scope to the perfect height. With these two perfect riser mount, you’ll be able to adjust Bushnell Trophy TRS-25 just like you want.


  • An excellent optical clarity that also gets rid of glares.
  • It’s extremely lightweight making it suitable for any situation.
  • Highly durable, can withstand a higher level of recoils.
  • A quality battery that lasts more than 3000 hours.
  • Can use it even in the darkest environment, it will still provide the same quality.


  • Red dot disappears sometimes.
  • In some cases, the red dot turns off with every shot.
  • Sight mounts are not too comfortable.

Bushnell Trophy TRS-25 Red Dot Sight Riflescope,...
3,584 Reviews
Bushnell Trophy TRS-25 Red Dot Sight Riflescope,...
  • Trophy red dot, 1x25mm; 3 MOA, Dot-reticle
  • Easy target acquisition; Mounting Length of 1.1"
  • Amber-bright high contrast lens coating (front...


2. TACTICON (TM) Predator V1 Red and Green Dot Sight Review

Accuracy at its best

TACTICON is a brand that excels at delivering quality every time. So, when you’re hoping to get one from this company, know that you’ll always get the full experience every time. TACTICON (TM) Predator V1 Red and Green Dot Sight is just one of their masterpieces.

Want to improve your accuracy and ace your game? With TACTICON (TM) Predator V1 Red and Green Dot Sight, you can easily do that.

The multi-lens coating is a remarkable feature that will enable you to see your target even more clearly. You’ll be amazed to see the optical clarity of this scope. The best features of this fine scope are that it can hold zero even after you’ve fired a numerous number of shots.

With the 5 adjustable brightness level, you’ll be able to shoot in any environment without straining your eyes. No low light environment can stop you from husting now.

The dot comes in two color red and green with 2MOA dot size, making it easy for you change the color of the environment. The unlimited eye relief will help you go on for a longer shoot without damaging your eyes.

Not enough? There’s more! This scope is also waterproof and fog proof, meaning you can use it on rainy days easily.

Make the perfect adjustment-

Combine TACTICON Flip-up Iron Sights for Rifle with TACTICON (TM) Predator V1 Red and Green Dot Sight adding more adjustments to your scope. Offering higher durability and accuracy this iron sight will surely come in handy.


  • Holds zero even after shooting for a long time.
  • Greater eye relief that makes it easier to use.
  • Higher optical clarity can withstand any environment.
  • Dot comes in 2 colors.
  • Extra battery comes with the package.
  • Easy to install the scope.


  • MOA dot size isn’t enough for some cases.
  • The dots get blurry in some cases.

Tacticon Armament Predator V1 Red Dot Sight |...
823 Reviews
Tacticon Armament Predator V1 Red Dot Sight |...
  • CO-WITNESSES BEAUTIFULLY - This red/green dot...


3. Sightmark SM26008 Ultra Shot Plus Red Dot Sights Review

Exceptional optical clarity in any environment

The Sightmark SM26008 Ultra Shot Plus Red Dot Sights made its fury comeback after being improved in many departments. Providing a clear-cut, ultra-fast shot this scope is to simply die for.

The scope comes with an AR red coating which helps in making the lens clear as a day. This type of optical coating always serves the best in low light environments. The scope offers to change red and green illuminated dot sights, giving you a chance to change the dot just as you want.

Just so that you don’t run out of battery life, this scope offers a camera battery CR123A, lasting up to 2000 hours and even more. So, you can go hunting and leave your dot sight on without worrying about battery life.

The scope offers 4 types of reticles with changing MOA dot size ranging from 3 to 5. So, use any recital type, you’ll still hit your target with 100% accuracy. To add more flexibility to the brightness adjustment settings offer 5 types of intensity starting from 1 to 5.

Add a little magnification to the view-

The Sightmark 3x Tactical Magnifier will add up 3x magnification to your zero magnifying Sightmark SM26008 Ultra Shot Plus Red Dot scope. It will ensure you to cover more yards improving the target acquisition to a great extent.


  • Consumes less power giving you a longer lasting experience.
  • Comes with a parallax correction settings.
  • Greater eye relief for eyeglass users.


  • Dot shuts off with most of the shots.
  • Batteries don’t last that long in higher settings.
  • Tinted glass causes glare sometimes.

Sightmark SM26008 Ultra Shot Plus Red Dot Sights
256 Reviews
Sightmark SM26008 Ultra Shot Plus Red Dot Sights
  • Red and green reticle illumination
  • Digital switch controls
  • Multiple reticles. Item has a one hour shut off to...


4. AT3 Tactical RD-50 Red Dot Sight 2 MOA Review

Exceptional battery output

Want a dot sight you can fully rely on? Then check out AT3 Tactical RD-50 Red Dot Sight 2 MOA Compact Red Dot Scope. The scope is full of features starting from its multicoated optical lens. These lenses are coated just to ensure the imaging clarity you deserve.

Not to mention the 2MOA red dot sight that’ll allow you to get a sharp and accurate shooting. Being integrated with its 11 brightness adjustment settings you’ll be able to hunt even in dim light.

With an exceptional battery life up to 50,000 hours in the low setting, this will enable you to go on for years with changing the battery. It also offers 5000 hours in the highest brightness settings which is pretty great as you don’t get this much longer life in any optics on the market.

Add a little flexibility to the mount with this scope. It comes with a wide range of mounts that can choose from covering Low, Med or Riser and Hi mounts. Just choose what best suits your comfort.

Go for the extra mile-

With Monstrum Tactical Medium Profile Picatinny Riser Mount you’ll be able to add a stronger build for you AT3 Tactical RD-50 Red Dot Sight. It’s extremely durable and can go up to years making hunting with dot sight even easier for you.


  • Solid build, can withstand any crashes or scratches.
  • Exceptional battery output, even in higher settings.
  • Unlimited FOV makes it easy to scan a zone.


  • Doesn’t provide the desired optical clarity every time.
  • After several rounds, the red dot stops working in few cases.

AT3 Tactical RD-50 Red Dot Sight - Optional...
6 Reviews
AT3 Tactical RD-50 Red Dot Sight - Optional...
  • ACCURATE - Crisp 2 MOA red dot sight allows for...
  • DEPENDABLE - Fully waterproof with sealed housing....
  • UNBEATABLE VALUE - Exceptional battery life - up...


5. OTW Red Dot Sight, 4 MOA Red Green Dot Sight Review

Efficient yet comfortable

Break the grounds with OTW Red Dot Sight, 1x20mm/ 1x27mm, 4 MOA Red Green Dot Sight Micro Rifle Scope. This is a great dot scope that allows you to scroll through their perfect brightness settings for different scenarios. Initially, they offer 5 brightness adjustment settings helping you achieve your required intensity in any environment you may counter.

The rotary switch integrates with this pair is extremely easy to use and has just the right amount of stiffness to endure any recoil sessions.

It’s designed to give you a two eye open sight providing a comfortable shoot every time. OTW offers two different color dots; red and green. Both dot types have the sharpest intensity giving it a higher degree of awareness and speed.

It’s extremely easy to mount, so you won’t have any trouble mounting it on your AR 15.

My favorite feature is the fast centering capability, it fully locks the dot on your target which is absolutely parallax free.

Go for a comfortable sight-

The Monstrum Tactical Lockdown Series Lightweight Riser Mount is here to save your day. Being integrated with OTW Red Dot Sight this riser mount will give you the flexibility you deserve for a comfortable shot. Being extremely lightweight it’s really easy to mount on your AR 15.


  • Has a 4MOA dot size, which makes it easy to hit the target.
  • Decent battery life lasting up to 2000 hours.
  • Awesome field of view.


  • Rose tinted lens.
  • Green dot has trouble focusing.
  • Can’t hold zero for some cases.

OTW Red Dot Sight,1x20mm 4 MOA Red Green Dot Sight...
127 Reviews
OTW Red Dot Sight,1x20mm 4 MOA Red Green Dot Sight...
  • 5 Brightness levels for each red and green dot for...
  • Excellent in durability,hold zero well after...
  • Fast centering with parallex-free red dot...


6. Rhino Tactical Green and Red Dot Sight Review

Ready for any tough environment

Just like its name Rhino Tactical Green & Red Dot Sight for Rifles & Shotguns is here to go through any tough situation and still provide the quality output. The large objective lens of 35mm enables a huge amount of light to go through the lens, gives you brighter sighting in low light scenarios.

The scope offers a 4MOA dot size which is really great as it will help you get a better aim at your target and follow through it. Integrated with standard AR pattern sight this dot sight is unstoppable.

Clever mounting is another great feature to make sure you have no trouble to mount it on your AR 15.

As a dot sight scope, it has 5 brightness adjustment setting covering both green and red dot color. The CR2032 battery will last up to 2000 hours or so. So, you’ll be able to go for a longer session without worrying about the battery life.

Enjoy the full package-

Combine your Rhino Tactical Green & Red Dot Sight for Rifles & Shotguns with 45 Degree Offset Backup Iron Sights by Ozark Armament for a better optical output. These iron sights are made to backup any kind of offset and let you thrive in your game to the fullest. This is an unbeatable duo that ensures perfection every time.


  • Flip-up lens caps provide protection to the lens.
  • The dots intensity is perfect for a daytime shooting.
  • Rugged build quality makes it highly durable.


  • The dot fogs up in low light environments.
  • Green dot seems to cluster up in a few cases.

Ozark Armament Rhino Tactical Green & Red Dot...
804 Reviews
Ozark Armament Rhino Tactical Green & Red Dot...
  • RUGGED and DURABLE - Specifically engineered to...
  • ADAPTABLE - 5 brightness settings for both Red and...
  • CO-WITNESS - The included cantilever mount allows...


7. UTG 4.2″ ITA Red/Green CQB Dot with QD Mount Review

Perfect zero locking with a crisp view

With UTG 4.2″ ITA Red/Green CQB Dot with QD Mount you’ll be able to enjoy advanced features at a reasonable pricing. Their dot is designed to give you a crisp clear feel while shooting.

This scopes most awesome features is the lockdown feature where you can lock up your zero sights for good with the help of locking screws. This ensures a steady zero locking even after numerous rounds of shoots.

The 4MOA dot size clearly helps in instant target acquiring. The dot size is more than generous to lock up a target and take a shoot with absolute perfection. The 38mm objective lens diameter is here only to provide a clear and bright imaging in dim light environments.

With a continuous brightness adjustment setting both the red and green dots can be adjusted just as you want for the environment.

The CR1620 3V battery will make your day lasting up to 1000 hours or so. You can also use it continuously on the brightest setting for 40 hours which makes it the perfect choice for indoor shooting.

Aim for a longer range-

With UTG 3X Magnifier with Flip-to-side QD Mount. This awesome 3x magnifier with multi-coated lenses will allow you to cover more grounds and shoot at longer range accurately. To make the mount even better use UTG Hi-Profile Compact Riser Mount. With a solid build, this riser mount will add comfortability to the UTG 4.2″ ITA Red/Green dot scope.


  • Hold zero even over 2000 rounds.
  • The versatile mounting base makes mounting easy.
  • Greater eye relief with no blind spots.


  • A bit low battery life, not suited for longer hunting sessions.
  • The green dot is barely visible in daytime or bright environments.

UTG 4.2' ITA Red/Green CQB Dot with QD Mount,...
828 Reviews
UTG 4.2" ITA Red/Green CQB Dot with QD Mount,...
  • Great Field of View and Unlimited Eye Relief
  • Clear and Sharp 4.0 MOA Dot Sight
  • No-Reflection High Tech Emerald Coatings


8. Dagger Defense DDHB Red Dot Reflex Sight Review

A durable scope for a longer run

Dagger Defense DDHB Red Dot Reflex sight is another great dot sight on the list. With its awesome quality optics and sturdy design, it can go through any rough environment and still go on for years.

The Dagger Defense is built for a longer durability with aircraft grade aluminum. So, you can trust this dot sight scope with your eyes closed. This dot sight scope seems to have a different reticle pattern with the dot surrounded by a square. This actually makes the aiming more perfect while shooting.

Both red and green color dots can be adjusted with a continuous brightness adjustment settings starting from extremely dim to bright scenarios.

If you want a versatile optic then Dagger Defense DDHB Red Dot Reflex sight is here to save the day. It can withstand any amount of recoil adding versatility on your optic list. The powerful battery can last up to 2000 hours giving you flexibility at its best.

A steady rifle with have a perfect aim-

Make your AR 15 steadier combining Dagger Defense with CVLIFE 6- 9 Inches Tactical Rifle Bipod Adjustable Spring Return with Adapter. A sturdy bipod with 5 different length setting giving you the flexibility of your lifetime.

Easy to attach and detach and has a mount adapter for a comfortable use.


  • Great brightness adjustment settings, gives you full control over it.
  • The optics can withstand any amount of recoil.
  • Durable build for rough environments.


  • Doesn’t seem to hold zero in some cases.
  • Reticles appear fuzzy sometimes.

DD DAGGER DEFENSE Dagger Defense DDHB Red Dot...
1,245 Reviews
DD DAGGER DEFENSE Dagger Defense DDHB Red Dot...
  • Both red and green dot, four position reticles
  • Equipped with a locking set screw to stabilize...
  • APERTURE:33mm LENGTH:82mm WEIGHT: 291g FIELD...


Top Pick,

Dot sight scopes are really efficient when it comes to shooting a moving target. Being small and lightweight makes them even more suitable for AR 15 rifles. Among the best 8 products on the list, Bushnell Trophy TRS-25 Red Dot Sight really stands apart from the crowd.

Not only it’s affordable but it also provides exceptional quality at that pricing. Makes it the perfect catch for your AR 15.

So, don’t wait up, give it a try then.

Check Out Bushnell Trophy TRS-25 Red Dot Sight Now!

Anthony Rios

Anthony Rios is an avid outdoorsman with years of experience in fishing, backpacking, and environmental conservation. He has backpacked and fished his way across the Western United States, and prides himself in living off the land for extended periods of time in wilderness settings across the US. He currently resides in Southern California, and teaches wilderness fishing and survival courses there in his spare time.

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