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Questions & Answers
Can you attach this to a midwest industries trijicon acog quick release mount? Expert Answer

The mounts are compatible with certain sizes of ACOGs, if the mount is for a 4x32 ACOG then it will be compatible.

by Nick B., Gear Expert, October 14, 2021
Customer Reviews
Helpful Positive Review
I have a Colt Match HBAR I bought after the first AWB... non removable carry handle. I used a knockoff 4x scope styled like the Colt 3x, I liked the magnification, but the HBAR needed a real optic. The TA31A is the best optic if you have a non-remo...
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4/4 found this helpful
Helpful Positive Review
Excellent optic by SgtSandman, Verified Owner, July 4, 2017
I'll make this short and sweet: the glass is very clear with no distortion at any edge, the field of view is large, the scope isn't too heavy but it doesn't feel cheap either, the reticle and drop subtensions/stadia are crisp, clear, and well illumin...
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3/3 found this helpful
Helpful Positive Review
ACOG 4x32 Triangle Reticle Scope by Ejk, October 12, 2021
Craftsmanship is excellent, sight is bright, comes packed in a nice case, with all the proper paperwork. Only downside is sight picture seems small. Shipping was not really a problem and item came intact with no damage.
1/1 found this helpful
Most Recent Reviews
ACOG TA31A 4x32 that fits in the AR-15 A2carry handle by Hanokem, Verified Owner, July 26, 2025
If you have an AR that has a non-removable carry handle, and want a 4 power optic to use on the rifle, which will be as a close height over bore (HOB) as possible, then consider this ACOG. You can buy a MUCH cheaper alternative if you install a pica...
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Read All 4 Reviews

Deal #8: 14% OFF Rifle Scopes

12DEALSClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Expires in 22 hours. Cannot be combined with other promotions or offers.
Reticle: Illuminated Red TA31A Triangle Illumination Color: Red Finish: Matte Color: Black Weight: 9.9 ozAdjustment Click Value: 1/3 MOAAdjustment Type: MOA Illumination Type: Fiber Optics , Tritium Condition: New

Code: TJ-RS-TA31A

MPN: TA31A

UPC: 719307301252

List: $1,559.00Save 26%
$1,149.00

Product Info for Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope

Trijicon TA31A ACOG 4x32 Scope with Red Dual Illumination Triangle Reticle BAC features Dual Illumination (Fiber Optic provides daylight illumination and tritium illuminates reticle at night). The reticle of the Trijicon Rifle Scope ranges out to 800 Meters for 5.56 (.223 cal). Trijicon 4 x 32mm ACOG Advanced Combat Optical Gunsights TA31A hit fast in any light. Trijicon ACOG 4 x 32 Rifle Scopes TA-31A are internally-adjustable, compact telescopic sights with tritium illuminated reticle patterns for use in low light or at night. Bindon Aiming Concept (BAC) models feature bright daytime reticles using fiber optics which collect ambient light. Trijicon 4x32 ACOGs combine traditional, precise distance marksmanship with close-in aiming speed. Although Trijicon ACOG 4 x 32 Rifle Scopes TA31-A have many features which are very advantageous for military use, they were developed by Trijicon without government funding. Designed for use with the M16 family, every feature of its mechanical and optical design was chosen for a single purpose: to provide increased hit potential in all lighting conditions - without failure-prone batteries.image

Specifications for Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope:

Manufacturer: Trijicon
Objective Lens Diameter: 32 mm
Magnification: 4 x
Reticle: Illuminated Red TA31A Triangle
Exit Pupil: 8 mm
Illumination Color: Red
Finish: Matte
Field of View, Linear: 36.8 ft at 100 yds
Field of View, Angle: 7 degrees
Eye Relief: 1.5 in
Color: Black
Weight: 9.9 oz
Adjustment Click Value: 1/3 MOA
Length: 5.8 in
Adjustment Type: MOA
Illumination Type: Fiber Optics, Tritium
Fabric/Material: Forged Aluminum
Shockproof: Yes
Fogproof: Yes
Package Type: Polymer Hard Case
Magnification Type: Fixed
Condition: New
Mount Type: Carry Handle Mount
Housing/Frame Material: Forged Aluminum

Features of Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope:

  • Always On, Always Ready: Most ACOG models are battery-free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light.
  • Take Control: Several ACOG models are designed with a user-adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings.
  • Rugged, Reliable Housing Design: Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system.
  • "Both Eyes Open" Design: "Both eyes open" shooting using Trijicon's Bindon Aiming Concept (BAC) feature allows for improved situational awareness.
  • Outstanding Clarity: The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion.
  • Exact Target Distances & Holds: Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming.
  • Combat Proven: No other magnified optic has been used more in combat than the ACOG.
  • Shock-Resistant: Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements.
  • Waterproof: Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging.

Package Contents:

  • Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope
  • Carry Handle Screw and Washer Kit (TA30)
  • 4x32 Scopecoat (TA64)
  • LENSPEN (TA56)
  • Lanyard Assembly for Adjuster Caps (TA71E)
  • Trijicon Logo Sticker (PR15)
  • ACOG BAC Manual
  • Warranty Card

Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope Orderable Models

List of Orderable Models

  • Trijicon ACOG 4x32 Dual Ill Rifle Scope, Red Triangle Reticle , MPN: TA31A , UPC: 719307301252 , Code: TJ-RS-TA31A

Trijicon ACOG 4x32 Red Triangle Reticle Rifle Scope Unavailable & Discontinued Models

List of Unorderable Models

  • Open Box,Dealer DMO, Trijicon ACOG 4x32 Dual Ill Rifle Scope, Red Triangle Reticle , MPN: TA31A-DMO , Code: TJ-RS-TA31A-DMO
  • Trijicon ACOG 4x32 Dual Ill Rifle Scope w/FREE Multitool, Red Triangle Reticle , MPN: TJ-RS-TA31A-KIT2 , Code: TJ-RS-TA31A-KIT2
  • Demo,Trijicon ACOG 4x32 Dual Ill Rifle Scope, Red Triangle Reticle , MPN: TA31A-DEMO , Code: TJ-RS-TA31A-DEMO
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