Trijicon ACOG 4x32 Scope .223 Ballistic Reticle w/ TA51 Mount - TA31-CH

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Trijicon ACOG 4x32 Scope Dual Illuminated .223 Ballistic Reticle w/ TA51 Mount - TA31-CH

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Regular Price: $ 1099.99

Special Price $ 899.99

Quick Overview

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SKU: 5165458124
UPC: 719307303386
  • Brand: Trijicon
  • Model: Advanced Combat Optical Gunsight (ACOG)
  • Magnification: 4x
  • Objective: 32mm
  • Length: 5.8"
  • Weight: 9.9 oz.
  • Bullet Drop Compensator: Yes
  • Illumination Source: Fiber Optics & Tritium
  • Reticle Pattern: Crosshair
  • Reticle Color: Red (Day and Night)
  • Calibration: .223
  • Eye Relief: 1.5"
  • Exit Pupil: 8mm
  • Field of View: 7 Degrees
  • Field of View @ 100 Yards: 36.8'
  • Adjustment @100 Yards: 2 (clicks/inch)
  • Housing Material: Forged Aluminum
  • Features: TA51 Mount Included

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The Trijicon ACOG (Advanced Combat Optical Gunsight) series was designed to be extremely durable and reliable. ACOG sights combine traditional, precise distance marksmanship with CQB speed. Every feature of an ACOG scope was chosen for a single purpose: to provide increased hit potential in all lighting conditions.

The 4x32 ACOG scope features a dual-illuminated red crosshair reticle that uses fiber optics and tritium for a bright aiming point in all light conditions. The ranging reticle also allows for bullet drop compensation out to 600 meters without any manual adjustments. Another important feature of the 4x32 ACOG sight is that it comes equipped with the Trijicon TA51 mount. The TA51 mount is a thumbscrew Picatinny mount manufactured by Trijicon specifically for your ACOG sight. When it comes to optics, you can trust Trijicon and their brilliant aiming solutions.

SKU: 5165458124
SKU 5165458124
Brand Trijicon
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165458124

Questions and Answers

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Browse 4 questions Browse 4 questions and 7 answers
Do you do lay away?
Davey on May 2, 2019
I have heard that people who wear glasses have trouble with out of focus reticles on ACOG's. Any truth to this?
Larry R on May 4, 2019
BEST ANSWER: This optic is probably better if you wear glasses. Especially if you have an astigmatism.
Is this set for a 14.5, 16, or 20in barrel?
Brian S on May 3, 2019
BEST ANSWER: This is the TA31-CH model - it does not have ballistic optimization. If this is important to you, then you are probably more interested in either the TA31RCO-A4CP (20" barrel) or the TA31RCO-M150CP (14.5" barrel). Both these RCO models have the chevron with the Target Reference System, whereas this model is a crosshair.
Would this scope work for day time / night time shooting? Looking for a 2 for 1 for the bang of the buck..
DirtyKurt on May 3, 2019
BEST ANSWER: This scope is optimal for daytime and low light conditions. The external fiber allows the reticle to illuminate further when it’s bright (like increasing the brightness on your phone). Generally it’s way too bright and you’ll need to partially cover the fiber. It uses a hydrogen isotope known as tritium to illuminate it when there is little to no light. There is no need for a battery, but because it’s a radioactive isotope and an unstable one, it has a half life. For tritium, that is around 15 years. From what I’m told trijicon will replace the tritium. The optic is also night vision compatible. Like most high quality scopes, this will gather light and allow you to see much clearer in early twilight periods.


4.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Very good combat proven sight, but eye relief leaves something to be desired.
Bought one during the last sale because the price was right. Very happy with the sight and needed minimal rounds to zero it on my Scar 16. The only downer is the eye relief. I had to mount the sight a little too close for my taste.
May 18, 2019
The best you can buy
I bought one during my second deployment to Iraq (2007). It was worth every penny, and it appears they have come down in price a lot. It is still my personal main battle rifle optic. Simple, rugged, reliable, and super accurate. No batteries, and it will last a lifetime.
May 3, 2019

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