Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Questions & Answers
What ammo is this calibrated for? M855 or M193? Additionally, what barrel length: 16" or 14.5"? Expert Answer

TA31F is flat-top calibrated, for a 62gr M855 out of a 14.5" barrel

by Jeremy, Gear Expert, November 17, 2021
Customer Reviews
Helpful Positive Review
Best optic for the AR platform!!!! by Legacy Reviewer, Verified Owner, September 9, 2013
This optic is by far the best for the AR-15/M-16 platform. I was issued one in the Marine Corps and used it through 3 tours in Afghanistan. I now own 2 ACOG TA31RCO models, and have this model with the green reticle on the way to me for another rifle...
Read More...
21/22 found this helpful
Helpful Positive Review
I love this ACOG by Noah, Verified Owner, June 11, 2020
The green reticle is bright and no matter the light conditions, target acquisition is fast. The glass is flawless. This was a great choice for me and I have no regrets. It's an ACOG, so it also has a solid reputation and a cool factor.
3/3 found this helpful
Helpful Positive Review
Green cheveron @triji by Oscar Mondragon, Verified Owner, December 25, 2018
I love this scope its gets any job done with precision specs top notch scope up to 1000 meters and zeros in at 110 meters preferably. High quility non battery powered scope only con is eye relief its going to take practice for perfect acquisitions. M...
Read More...
1/2 found this helpful
Helpful Positive Review
Best optic by Truth, April 4, 2019
I've used the acog all throughout my military career. I tried all different types of optics on my rifle but found myself coming back to the acog. The eye relief isn't that great but if you get used to the optic you will have no problems staying on ta...
Read More...
2/2 found this helpful
Helpful Positive Review
Excellent Optic by Jon Adams, March 24, 2017
I have this mounted on a LWRCI IC-SPR and this is a great optic for its intended use. I frequent indoor & outdoor ranges and have been accurate out to 200 yards. I didn't know I was cross eye dominant until I bought this optic and attempted to use th...
Read More...
1/1 found this helpful
Helpful Positive Review
I put this on a SCAR 17H and love it by andrew, December 18, 2015
I found it hard to put down this much cash for a 4x scope.... but it proved to be worth it after shooting with it. what a difference this made over my previous EOTECH. I was displeased with my SCAR previosly but now back in love with it due to the ...
Read More...
1/1 found this helpful
Read All 25 Reviews
Reticle:
Illuminated Green Chevron BAC
Reticle Focal Plane:
Second Focal Plane (SFP)
Illumination Color:
Green
Finish:
Matte
Color:
Black
Weight:
9.9 oz
Adjustment Click Value:
1/2 MOA
Adjustment Type:
MOA
Illumination Type:
Fiber Optics, Tritium
Included Accessories:
4x32 Scopecoat TA64, ACOG Manual, Flattop Mount TA51, Lanyard Assembly for Adjuster Caps TA71E, LENSPEN TA56, Trijicon Logo Sticker PR15, Warranty Card
Condition:
New

Code: TJ-RS-TA31F-G-EE

MPN: TA31F-G

UPC: 719307302945

List: $1,617.00Save 24%
$1,228.99

Buy Together and Save

OP Bucks$34.68

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Trijicon ACOG 4x32 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount

Trijicon ACOG 4x32 Scope with Chevron BAC Flattop Reticle TA31F includes Trijicon TA51 Flat Top Adapter. The chevron reticle of the Trijicon Gun Sight is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is 19" at 300 meters. This allows range estimation for silhouette targets. Trijicon TA31F ACOG 4x32 Scope with Chevron BAC Flattop Reticle features Dual Illumination (Fiber Optic provides daylight illumination and tritium illuminates reticle at night). The ranging reticle is calibrated for 5.56mm (.223 cal) flat-top rifles out to 800 meters. Trijicon TA-31F 4 x 32mm ACOG Advanced Combat Optical Gunsights hit fast in any light. Trijicon ACOG 4 x 32 Rifle Scopes are internally-adjustable, compact telescopic sights with tritium illuminated reticle patterns for use in low light or at night. Bind on 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-F 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 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount:

Manufacturer: Trijicon
Objective Lens Diameter: 32 mm
Magnification: 4 x
Reticle: Illuminated Green Chevron BAC
Reticle Focal Plane: Second Focal Plane (SFP)
Exit Pupil: 8 mm
Illumination Color: Green
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: 1/2 MOA
Length: 5.8 in
Adjustment Type: MOA
Illumination Type: Fiber Optics, Tritium
Fabric/Material: Forged Aluminum
Lens Material: Glass
Optical Coating: Multi-Coated
Battery Life: no batteries
Water Resistance Level: Waterproof
Water Resistant Mark: 328 ft
Shockproof: Yes
Fogproof: Yes
Package Type: Polymer Hard Case
Included Accessories: 4x32 Scopecoat TA64, Flattop Mount TA51, Lanyard Assembly for Adjuster Caps TA71E, Warranty Card, ACOG Manual, Trijicon Logo Sticker PR15, LENSPEN TA56
Magnification Type: Fixed
Condition: New
Country of Origin: USA
Front Sight Color: Green
Attachment Type: TA51

Features of Trijicon ACOG 4x32 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount:

  • 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 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount
  • Thumbscrew Flattop Adapter (TA51)
  • 4x32 Scopecoat (TA64)
  • LENSPEN (TA56)
  • Lanyard Assembly for Adjuster Caps (TA71E)
  • Trijicon Logo Sticker (PR15)
  • ACOG Manual
  • Warranty Card

Trijicon ACOG 4x32 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount Orderable Models

List of Orderable Models

  • Trijicon ACOG 4x32 Rifle Scope, Black w/TA51 Flattop Mount & Illuminated Green Chevron BAC Reticle , MPN: TA31F-G , UPC: 719307302945 , Code: TJ-RS-TA31F-G-EE

Trijicon ACOG 4x32 Scope KIT, Green Chevron BAC Flattop Reticle & TA51 Mount Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Trijicon ACOG 4x32 Rifle Scope, Black w/TA51 Flattop Mount & Illuminated Green Chevron BAC Reticle , MPN: TA31F-G-DEMO , Code: TJ-RS-TA31F-G-DEMO
Compare (0)