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Trijicon ACOG 4x32 Green Crosshair 300 BLK TA31-C-100413

SKU TA31-C-100413

Dual Illuminated w/ 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. w/o mount
  • 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 .300BLK Crosshair 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
  • UPC719307308305
  • MPN100413

Customer Reviews

Average Rating
May 20, 2023

Quick delivery and I love the Trijicon optic. Looks great on my 300. I can't wait to sight it in.

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November 30, 2022

Trijicon has a zillion sights, ACOGs, scopes, etc., in so many calibers, colors, chevrons, etc. Finding the right one took a bit of time, but well worth it. An absolute PLEASURE to use this Trijicon ACOG. It requires NO batteries and worked extremely well in a Texas bright sun or a sunset. It took less than 5 minutes to mount it (2 large screws) and then sighting it took very little effort on my Sig MCX Spear LT (7.62x39). It weighs so little and so, it added very little to the weight of the firearm. I have only shot this to 100 meters, but with this rifle (Sig MCX Spear LT) and Match ammunition, it was easy to stay at 1/2 an MOA. Last, this ACOG is built to last and take a lot of abuse. From order to delivery in 4 days. Absolutely fabulous service from EuroOptics. I will be getting a few more of these.

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