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Trijicon ACOG 4x32 Green Chevron Gray TA31-D-100311

SKU TA31-D-100311

.223 Ballistic Reticle - TA51 Mount

List Price $1,653.00
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With over one million produced, Trijicon’s Advanced Combat Optical Gunsight, better known as the ACOG has become iconic in the realm of combat optics — and for good reason, the ACOG has an unquestioned reputation for quality and reliability. The Trijicon ACOG is the official medium range weapon sight for both U.S. Special Operations Forces and the Marine Corps as well as being the optic of choice for law enforcement agencies across the country. What sets the ACOG apart from the pack is what it offers to its users, increased hit potential regardless of light conditions. This is due to the tritium/fiber optic illuminated reticle found in most Trijicon ACOG riflescopes, this automatically adjusts illumination of the reticle based on available light. With a wide array of magnification levels, reticle designs, and reticle colors available — there truly is an ACOG for every mission.

Trijicon ACOG riflescopes come in the following magnification levels:

1.5x16, 1.5x24, 2x20, 3x24, 3x30, 3.5x55, 4x32, 5.5x50, and 6x48.


Superior Quality Glass Lenses
Multi-coated lenses provide superior clarity and light transmitting capabilities with zero distortion.
Rugged Aluminum-Alloy Housing
Forged 7075-T6 aircraft aluminum-housing provides for a nearly indestructible sighting system.
Fixed Magnification
Less moving parts than a variable optic equals increased durability and reliability. Seven magnification levels are available.
Waterproof up to 100 Meters
Dry-nitrogen filled to eliminate fogging. Five times more waterproof than military standard requirements.
Both Eyes Open Design
The ACOG can be used as a CQB sight when shooting both eyes open utilizing the Bindon Aiming Concept.


  • Item ConditionNew
  • Scope Weight:9.9 oz.
  • Scope Length:5.8"
  • Magnification Range:4x
  • Scope Objective Diameter:32mm
  • Turret Adjustment (Click Value):2 clicks/inch @ 100 yards
  • Parallax Adjustment:Fixed
  • Reticle Details:Green Chevron Reticle
  • Field of View:
    36.8 ft @ 100 yards
  • Exit Pupil:8.1 mm
  • Eye Relief:1.5"
  • Illuminated Reticle:Yes
  • Scope Finish:Black
  • Product TypeRiflescopes
  • UPC719307307254
  • MPN100311

Customer Reviews

Average Rating
March 9, 2023

The Trijicon ACOG 4x green chevron 223 is an awesome optic (sniper grey). It is crystal clear and built like a tank. Sure the eye relief isn't the greatest, but the way it is mounted, you don't have to have your nose on charging handle and it is so bright. I taped 90% of the fiberoptic line to dim the green chevron for daytime rifle matches, and it is perfect. Ranging out to 500 meters is cake with this optic and super fast. Now lets talk about Eurooptic. Truth be told, before I purchased my trijicon I had never heard Eurooptic.com, but I am so happy I did. Wow, I thought primary arms had fast shipping, Eurooptic.com is faster and prices are just as good if not better on good quality stuff. I just ordered a holosun 507C green dot for my comp pistol from them on Wednesday and it is going to be delivered on friday (coast to coast shipping). I will be purchasing all my optics from Eurooptics from this point forward, and they have a great military discount, which is the sway of balance from Primary Arms who has been my goto for years.

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