Best AR 15 ACOG Scopes

The AR-15 is one of the most popular rifles in America. It’s a versatile, reliable rifle that offers accuracy at long and short ranges. The best AR 15 ACOG scope will give you the versatility to shoot accurately both outside and inside without having to switch scopes between shots.

Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
23 Reviews
Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light

It features its customization in so many ways to suit your needs. For example, if you want your AR 15 to have more accurate shots at long distances, one of the first things you should do is put on an ACOG scope.

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If you are in a hurry to purchase Best AR 15 ACOG Scopes, and you want to make the best decision, here are our top 3 picks:

Top 3 Best AR 15 ACOG Scopes

Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
COMBAT PROVEN: No other magnifed optic has been used more in combat than the ACOG
$1,769.99
Trijicon ACOG 4 x 32 Scope USMC Rifle Combat Optic for A4
Trijicon ACOG 4 x 32 Scope USMC Rifle Combat Optic for A4
COMBAT PROVEN: No other magnifed optic has been used more in combat than the ACOG
$1,283.26
Trijicon TA02 ACOG Battery Illuminated LED Scope, Black Finish
Trijicon TA02 ACOG Battery Illuminated LED Scope, Black Finish
COMBAT PROVEN: No other magnifed optic has been used more in combat than the ACOG
$1,316.00

One of the reasons ACOG scopes are perfect for AR 15 rifles is that they have a reticle built-in, making it much easier to aim with. You also don’t need to buy any additional optics, which saves on money and weight. 

Alternatively, suppose you want your rifle to be lighter. In that case, some people prefer using red dot sights because they provide an excellent field of vision and give users increased accuracy at close range.

7 Best AR 15 ACOG Scopes (Ranked And Reviewed)

1. Trijicon 4×32 ACOG/RMR Combo Riflescope

Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
23 Reviews
Trijicon 4x32mm ACOG Dual Illumination Green Crosshair Reticle Flat Dark Earth Optics
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light
  • RUGGED FLAT DARK EARTH CERAKOTE FINISHED ALUMINUM-ALLOY HOUSING: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system

SPECIFICATIONS:

  • Dimensions: 12 x 10 x 6 inches
  • Weight: 1 Ounces
  • Magnification: 4x

Trijicon 4×32 ACOG/RMR Combo Riflescope is a firearm scope that includes both an optical rifle sight and reflex sight. This scope offers shooters the ability to use it in day or night conditions and a wide field of view for accurate targeting. 

Engineers designed it with decades of experience designing military-grade optics. The lens on this scope has been coated with high-grade anti-reflective material to promote maximum light transmission and bright images, even when looking through the optic at extreme angles.

This riflescope uses bullet drop reticle patterns for extremely accurate shooting at ranges up to 800 meters. The reticle also features a bullet drop compensator, holdover dots for ranges out to 800 meters, and illumination control settings designed for heavy or light background conditions.

The Trijicon ACOG/RMR Combo Riflescope includes optical magnification four times with an exit pupil that adjusts from 25mm to 12.25mm in diameter (in the daytime), allowing shooters to see more clearly at long distances without being overwhelmed by excess brightness or flashing lights.

Best AR 15 ACOG Scopes
Pros
Cons

2. Trijicon TA31RCO-A4 ACOG 4×32 USMC RCO Riflescope

Trijicon ACOG 4 x 32 Scope USMC Rifle Combat Optic for A4
46 Reviews
Trijicon ACOG 4 x 32 Scope USMC Rifle Combat Optic for A4
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light
  • RUGGED ALUMINUM-ALLOY HOUSING: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system

SPECIFICATIONS:

  • Dimensions: 3 x 3 x 15 inches
  • Weight: 2 Pounds
  • Magnification: 4x

The Trijicon TA31RCO-A4 ACOG 4×32 USMC RCO is a rifle scope designed with the Marine Corps. This riflescope is built to take quick shots at targets from various distances. The scope comes equipped with an illuminated reticle, so you can shoot day or night without having to worry about aiming points in low-light situations.

The ACOG has an illuminated reticle to use with or without batteries. The dual-illumination system utilized in the TA31RCO-A allows for a battery to last up to 12,000 hours before needing a replacement. This scope also includes a field of view at 100 yards on low-end magnification (x32) and then increases to 18mm at high magnification (x16).

Best AR 15 ACOG Scopes
Pros
Cons

3. Trijicon TA02 ACOG 4×32 LED Riflescope

Trijicon TA02 ACOG Battery Illuminated LED Scope, Black Finish
14 Reviews
Trijicon TA02 ACOG Battery Illuminated LED Scope, Black Finish
  • LED ILLUMINATED RETICLE: Powered by a single AA battery, the LED ACOG can run for over 12,000 continuous hours (on setting #4) and features six adjustable brightness levels with an “off” between each setting
  • RUGGED ALUMINUM-ALLOY HOUSING: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system

SPECIFICATIONS:

  • Dimensions: N/A
  • Weight: 1.13 Pounds
  • Magnification: 4x

Trijicon TA02 ACOG 4×32 LED Riflescope is a military-grade scope that features an illuminated green crosshair to make it easier to see in low light and includes a magnification of 4x. This scope operates on one CR123 battery, which can last up to 600 hours when fully charged. 

It is the most popular model with U.S. Army Marksmanship Unit shooter David Tubb. An ACOG is not a scope for shooting at ranges of 500 yards or more. It’s best suited to 300-yard and closer distances where the illuminated crosshair can shine like a beacon in low light conditions on top of your target.

The TA02 doesn’t come with an integrated RMR. Still, its relatively high magnification makes it perfect for long-range targets and close-quarters combat because you get both medium and short-range capabilities without having to change scopes.

Pros
Cons

4. Trijicon TA31F ACOG 4×32 BAC Riflescope

Trijicon 4x32 ACOG Riflescope with Green Dual Illuminated Chevron Reticle and TA51 Mount
54 Reviews
Trijicon 4×32 ACOG Riflescope with Green Dual Illuminated Chevron Reticle and TA51 Mount
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light
  • “BOTH EYES OPEN” DESIGN: The ACOG can be used with “both eyes open,” utilizing the Bindon Aiming Concept

SPECIFICATIONS:

  • Dimensions: 5.9 x 2.0 x 2.5 Inches
  • Weight: 297.5g
  • Magnification: 4x

The Trijicon TA31F ACOG 4×32 BAC Riflescope is a military-grade riflescope with an illuminated first focal plane reticle. This scope can be mounted on any weapon and provides a clear, precise aiming point. The green chevron offers windage adjustment in all lighting conditions without changing head position. 

It also features adjustable finger elevation, color-coded brightness control for amber and green illumination, and up to 6x magnification on the lower power setting. This scope is perfect for hunters, competitive shooters, and military personnel who want to engage targets at distances of up to 800 meters. It’s a must-have for anyone who shoots long range.

The Trijicon TA31F ACOG BAC Riflescope is not just another riflescope; it’s the only one that offers these features. The reticle stays focused while you pan across the scene, and no need to dial head position with every new target. 

You can adjust the windage (and bullet drop compensation) without changing your aiming point or adjusting the magnification level.  And adjustable illumination setting from bright sunlight settings down to moonlight conditions.

Best AR 15 ACOG Scopes
Pros
Cons

5. Trijicon TA31-CH-G ACOG 4×32 BAC Riflescope

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Trijicon ACOG TA31-CH-G Trijicon 4x32 Scope with Dual Illuminated Green Crosshair .223 Ballistic Reticle
23 Reviews
Trijicon ACOG TA31-CH-G Trijicon 4×32 Scope with Dual Illuminated Green Crosshair .223 Ballistic Reticle
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light
  • RUGGED ALUMINUM-ALLOY HOUSING: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system

SPECIFICATIONS:

  • Dimensions: 8.25 x 6.63 x 3.63 inches
  • Weight: 9.9 Ounces
  • Magnification: 4x

The Trijicon TA31-CH-G ACOG 4×32 BAC Riflescope is a high-powered scope that offers the shooter an advanced and versatile reticle pattern that includes bullet drop compensator, windage, and lead vernier.

The first focal plane reticle provides range capability ranging from 100 yards to infinity in 50-yard increments with a subtense of 3.4 MOA per line (1/2″ at 100 yards). You can use this riflescope on any caliber of weapon, including .308 Winchester (7.62 x 51mm NATO), 7.62mm x 54R Russian, .30-06 Springfield (7.62x63mm), 5.56 mm NATO/.223 Remington, .300 Winchester Magnum, and other calibers. 

Armed forces of more than 50 countries use the ACOG rifle scopes. The US military has a multi-year contract with Trijicon for most rifles in service today and uses both the TA01 ACOG and TA11 ACOG scopes as their issue optics.

Pros
Cons

6. Trijicon TA11C ACOG 3.5×35 BAC Riflescope

Trijicon ACOG 3.5 X 35 Scope Dual Illuminated Donut .223 Ballistic Reticle, Red
189 Reviews
Trijicon ACOG 3.5 X 35 Scope Dual Illuminated Donut .223 Ballistic Reticle, Red
  • BATTERY-FREE ILLUMINATION: Features a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light
  • RUGGED ALUMINUM-ALLOY HOUSING: Forged 7075-T6 aircraft-aluminum-alloy housing provides for a nearly indestructible sighting system

SPECIFICATIONS:

  • Dimensions: 12 x 10 x 6 inches
  • Weight: 1 Pound
  • Magnification: 3.5x

The Trijicon TA11C ACOG 3.5×35 BAC Riflescope is a scope that was made for military purposes and serves the needs of civilian shooters. The reticle in this optic can be illuminated with fiber optics and tritium, meaning it will work even when there isn’t any light available. 

It is the most powerful in Trijicon’s ACOG line. It has a 3.5x35mm wide-angle lens with a range of magnification and an illuminated red chevron reticle; you can power by 1 AA battery or one CR2032 lithium battery (included). The scope also features fully adjustable knobs for windage and elevation adjustments that will help you to range your target from 100 yards up to infinity accurately.

Pros
Cons

7. Trijicon TA33 ACOG 3×30 Scope

Trijicon 3x30 Compact ACOG Dual Illum Red Horseshoe 5.56x45mm/62gr Ballistic w/ Colt Knob Thumbscrew Mount 400137
12 Reviews
Trijicon 3×30 Compact ACOG Dual Illum Red Horseshoe 5.56x45mm/62gr Ballistic w/ Colt Knob Thumbscrew Mount 400137
  • The new 3x30mm model is designed for law enforcement and military applications where the combination of ample magnification, low light capability and long eye relief make the TA33 the Trijicon ACOG of choice
  • Includes 1 Flat top Mount (TA60) 1 Compact ACOG Scopecoat (TA62) 1 Medium sized Pelican Case (TA88) 1 Lenspen (LENSPEN) 1 Trijicon Logo Sticker (PR15) 1 Manual 1 Warranty Card

SPECIFICATIONS:

  • Dimensions: 20 x 15 x 15 inches
  • Weight: 1 Pounds
  • Magnification: 3x

Trijicon is a company that has been designing and building high-quality optics for over 40 years. They are the leading manufacturer of rifle scopes, night vision devices, reflex sights, binoculars, and spotting scopes. 

This scope features many innovative design elements, including an illuminated reticle with ten intensity levels plus a tritium illuminator to light up targets in low-light conditions without using battery power or adding weight to the optic. It also comes with a built-in Picatinny rail mount for mounting onto any Picatinny rail-equipped weapon system (including the M-16 rifle) or a Weaver-style base.

Pros
Cons

FAQs

The ACOG scopes for AR-15 don’t need a battery, so they work efficiently. They don’t need maintenance. It is something that makes the ACOG so uncommon.  It is likewise compelling for circumstances where you needn’t bother with high force amplifications. Additionally, the Trijicon ACOG scope accompanies various designs. 

Trijicon uses manual crosshairs rather than an illuminated reticle, so you don’t need batteries to worry; this keeps up costs and weight but does mean you’ll need some time adjusting when moving between optics with different styles of aiming dots or lines on them. 

It also doesn’t allow for bullet drop compensation like other high-end scopes do. It’s durable and can take a lot of abuse without problems glass is coated in multiple layers of varnish, which gives it protection from scratches and glare.

The ACOG scope has a relatively high magnification. It includes an illuminated reticle or “crosshair” that makes aiming low-light conditions much more effortless than without one. This type doesn’t need to have batteries replaced because you can adjust the illumination for brightness based on how dark it is outside.

Additionally, recollect that there will be fewer moving parts with a fixed amplification, which could mean toughness. By and by, the degree is a la mode, quality, and minimized. It additionally utilizes a red spot pointing reticle, which can enlighten as per the measure of light.

The Advanced Combat Optical Gunsight, or ACOG, is a family of telescopic sights for rifles. Trijicon originally designed the family. It has been in use with the military since 2001 with many different rifles. 

One of the most popular models that use an ACOG scope is the M16A-R rifle (a shortened version). The military uses a variety of scopes depending on the mission. One scope commonly used by many military branches is the ACOG or Advanced Combat Optical Gunsight. 

The ACOG comes in fixed and variable zoom models, with magnification levels from 1x to 6x. The higher-powered models are more effective for long-range shots, while lower-powered ones work better in close-quarters combat situations.

Conclusion

We hope that we have helped you find the proper scope for your rifle. We know these are all expensive, so we want to help you make a decision that will be worth it in the long run. All of the models are great, but some might work better for specific situations than others. 

If you’re looking for one general purpose scope, we recommend going with the iron sight optics or the Aimpoint H-1. If you’re looking for something lightweight and low profile,e then go with Trijicon MRO; finally, if you need a versatile optic that can do anything from close range to long-range shooting, then Leupold Mark 6 3x20mm is perfect.

Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at Ballachy.com .

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