Home Reviews Trijicon ACOG 4×32 Review Through The Eyes Of US Marine

Trijicon ACOG 4×32 Review Through The Eyes Of US Marine


US marine shooting through ACOG sight

The Trijicon ACOG and I are intimately familiar. I was issued a Trijicon ACOG for five years while I served as a United States Marine. The Trijicon ACOG quickly became one of my absolute favorite pieces of gear. In my five years of experience with the optic, I took it around the world, to Afghanistan, Africa, Spain, Romania, not to mention yearly qualifications and countless field training exercises.


The Trijicon ACOG’s main claim to fame is its battery-free illuminated reticle. The optic absorbs light from the area around it and charges the reticle. At night, the reticle may dim some, but the reserved power from the day provides it with sufficient power for the entire night. The ACOG is also completely waterproof, which for the amphibious Marines, is a major advantage. The ACOG can submerse to a 100 meters, which is an extreme distance for a rifle scope.

Comparing With Similar Optics

Trijicon Acog
Trijicon Acog

Leupold Mark 4 HAMR w/ Deltapoint
Elcan SpecterDR
Elcan SpecterDR
Objective Lens:32mm24mm32mm
Reticle:ChevronCM-R2 Red Dot With 5.56 Ballistic Drop
Length: 5.8 inches 5.7 inches6 inches
Weight:9.9 oz14.8 oz23 oz
Brightness levels:Adjusted automatically by fiber optics5 for day + 2 NV5 settings
Eye Relief:1.5 inches2.7 inches2.75 inches
Product Page:Click HereClick HereClick Here



4 x 32 Illuminated Chevron Acog

The ACOG is also built like a tank, which is barely an exaggeration. In fact in Iraq one on of these optics took an AK round and saved the Marine using it. The clincher? The optic kept working. ACOGs are remarkably durable. From the first time you handle one, you can feel it’s quality in the hand. The fit and finish is remarkable, and even with years of abuse holds up.

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Through the Glass

acog 4x32 chevron reticle used by US marines
Famous Chevron reticle

The Trijicon ACOG is a close combat optic and comes in a variety of different options. My ACOG was 4 power and utilized a chevron style reticle. Regardless of the model one that is positive about ACOGs is the fact the glass provides a crystal clear picture. ACOG utilizes the highest quality glass and a fantastic design to give a crisp sight picture and utilize all available light.


ACOG’s come equipped with a bullet drop compensator designed to ensure accuracy at long ranges. The BDC on the ACOG works brilliantly. At qualification every year, it was almost too easy to effectively hit targets.


Using standard ball ammo all I as a shooter had to do was place the appropriate bullet-drop holdover on my target and pull the trigger. The BDC holdover points also have a rudimentary range finding system built into it. The holdovers are a small straight line that gradually decrease in size. These holdovers are designed so when placed between an average man’s shoulders they go from one end to another. If the line fits between a man’s shoulders that’s here you need to hold to hit him.


In practice

As a fixed 4 power optic, the scope is designed for short to medium engagement distances. Utilizing this optic at five hundred yards I was able to effectively hit a man sized targets consistently. This is not considered the max effective range for a point target with the M16/AR15 platform and the ACOG takes all the guess work and sight adjustments out of the picture. The holdovers stayed consistent at 100, 200, 300, and 500 yards/


The ACOG proved to be very versatile as well. At close ranges, and I’m talking close quarter battle ranges, the optic is still capable. Using the optic with both eyes open the scope acted efficiently as a red dot optic. The Bindon aiming concept works by using both eyes the brain superimposes the aiming reticle onto the target, Magnification does not become an issue although the optic is effectively 4 power. So when firing at ranges between 7 to 25 yards the optic could still be used for rapid target acquisition, and used for rapid strings of fire.

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Parting Shots

It’s hard to pigeonhole the Trijicon ACOG into one category or another. In my years of use, we used the ACOG for everything, from long range engagements to room clearing. The optic always performed. In fact, it’s one of those pieces of gear that Marines all around the Corps love and use to great effect. The only role the ACOG may not do well in is the long range role, with engagement distances beyond 600 meters.


For a police officer looking for a patrol optic or an average Jane or Joe looking for a do anything optic it’s hard to beat the ACOG. The optic can be used for hunting, for home defense, or just target shooting. This is a do anything optic designed for a do anything rifle.

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Be Sure To Check Out These Optics Too:

Trijicon VCOG 1-6x24 Riflescope
Trijicon VCOG 1-6×24 Riflescope
Elcan SpecterDR Tactical Rifle Scope
Elcan SpecterDR Tactical Rifle Scope








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Perceived Image


  1. Jim,I went through a Small Arms Weapons Instructors curose, Night Vision Optics Course, Marskmanship Coaches Course, and a Combat Marksmanship Instructors Course. In at least 2 of these curoses, I received while in the Marine Corps, we were provided with detailed info on how the ACOG(AKA RCO, rifle combat optic) works, how to zero the optic, and was familiarized with all the specifications and characteristics of the ACOG.Why I bring this up is because you say that there is no horizontal stadia line that allows for the proper techniques of engaging moving targets. First of all, we both no the difference between half and full lead, as well as the 2 ways to engage(tracking and ambush), BUT you are wrong about the horizontal stadia line. There is a horizontal stadia line.Before I go any further, have you looked through the lenses of an ACOG before?I have.Did you know that there are 2 different models of ACOGs?-TA31RMR-TA31RCOAnd both have horizontal stadia lines. And both are 4×32, not 3.5×35. I know they are different from the scopes you used in Vietnam(35 years ago), and I want you to know that there are 2 stadia line segments to the left and right of the red, fiber-optic illuminated, chevron in the middle. The tip of the red chevron represents the vertical centerline, or zero mils. Under the red chevron is a small line segment that runs perpendicular to the horizontal stadia line.Myself, as well as the Marines in my unit, loved the use of the ACOG/RCO. It was used for indirect fire missions and doubled as a spotting scope for the longer range engagements. It allowed for better accuracy at farther distances. It gave us an advantage in the mountain warfare setting.And the M16 service rifle holds 4 minute of angle shot groups. If put in a vice. Sergeant/USMC/Infantry Squad Leader

  2. I’ve owned a trijicon acogs and some of the the other brands. You can’t beat an acog. However, there are tons of other brands for $1000 dollars less which get the job done and I would base if off what your looking to do. If I was in combat, I’d bet my life on an acog but if I’m at the range or just hunting, the other brands get the job done for $1000 less. The most recent one I bought was the terminus Optics Scope off of Amazon. Great range piece and I use it for hunting. But like I said, if I was in the heat of combat, I’d for sure go with a Trijicon ACOG. https://www.amazon.com/Terminus-Optics-Rifle-Scope-Rifles/dp/B01FXOK7MS/ref=sr_1_1?ie=UTF8&qid=1489332154&sr=8-1&keywords=terminus+optics+scopes#customerReviews