Trijicon 4x32 ACOG Riflescope

BH #TR4X32ARD223 • MFR #TA31
Print
Trijicon 4x32 ACOG Riflescope
Key Features
  • Matte Black
  • Carry Handle Mount
  • Illuminated Red Doughnut - 5.56 NATO
Trijicon produces battle-proven aiming systems that deliver rapid target acquisition and increased hit potential under any lighting conditions. Their self-luminous aiming systems empower you to execute any shot with complete confidence in bright light, low light or no light at all.
More Details
Special Order
Expected availability: 6-10 Weeks
No Store Display
This item cannot be canceled or returned.
Free Standard Shipping
Protect Your Gear
Add a protection plan from $79.99
Ask an Expert
800-606-6969

Trijicon ACOG 4x32 Overview

Trijicon produces battle-proven aiming systems that deliver rapid target acquisition and increased hit potential under any lighting conditions. Their self-luminous aiming systems empower you to execute any shot with complete confidence in bright light, low light or no light at all.

Every feature of the ACOG's (Advanced Combat Optical Gunsight) mechanical and optical design was designed for use with the M16 family of firearms. This sighting system was engineered for a single purpose; to provide increased hit potential in all lighting conditions - without relying upon failure-prone batteries.

The ACOG is engineered upon a roof prism design for maximum optical precision and enhanced reliability. These sights combine traditional, precise long-range accuracy with rapid close-quarters target acquisition.

Although the ACOGs have many features which are very advantageous for military use, they're equally well adapted for sporting and tactical applications. These compact telescopic sights are internally adjustable, with tritium illuminated reticles for use in low-light scenarios.

The 4x32 ACOG Riflescope is a comfortable and engaging optic to sight through in day or nighttime. The generous field of view provides the ability to see your target and what's going on around the target. This is a rugged optic for the discerning professional who understands that success is the only acceptable outcome.

Rugged Construction
Forged 7075-T6 aircraft aluminum alloy housing
Carry Handle Compatible
Designed for use with standard M16/AR15 firearms with carry handles
Bindon Aiming Concept
The Bindon Aiming Concept was devised by Trijicon's founder, Glyn Bindon. The BAC method of aiming with both eyes open ensures a far superior sense of balance, and a wider field-of-view. Combining these benefits with a magnified Trijicon sight gives you a considerable advantage over your target.
Dual Illuminated Red Doughnut Reticle Calibrated for .223 (5.56x45 NATO)
This red donut reticle is calibrated for .223 caliber firearms. The donut sits atop a long medium-weight post that offers hash-marks for accurate long-range (800 m) shot placement. The hollow donut ensures positive target acquisition at all times.
Trijicon's proprietary tritium/fiber-optic illumination technology provides the donut with a brilliant red glow.
Made in the USA
UPC: 719307300316

Trijicon ACOG 4x32 Specs

Key Specs
Magnification
4x
Objective Lens Diameter
32 mm
Reticle Type
Reticle Type: Doughnut
Self-Powered Illumination: Red
Mounting
M16 / AR-15 Carry-Handle
Optics
Magnification
4x
Objective Lens Diameter
32 mm
Exit Pupil Diameter
8 mm
Eye Relief
1.5" / 38 mm
Field of View
36.8' @ 100 yd / 12.2 m @ 100 m
Reticle
Reticle Type
Reticle Type: Doughnut
Self-Powered Illumination: Red
Adjustments
Impact Point Correction
40 MOA (Windage & Elevation)
Adjustment per Click: 1/3 MOA
Diopter Adjustment
No
Environmental
Environmental Resistance
Water-Resistant (Unrated)
General
Mounting
M16 / AR-15 Carry-Handle
Dimensions
5.8" / 14.7 cm
Weight
14.9 oz / 422 g (without Mount)
Packaging Info
Package Weight
2 lb
Box Dimensions (LxWxH)
8.1 x 6.3 x 3.6"

Trijicon ACOG 4x32 Reviews

Excellent

By Craig
Rated 5 out of 5
Date: 2026-02-02

I've purchased products from B&H in the past, always great service, fast delivery and great price. The ACOG speaks for itself

Awesome optic combo

By Neil Patrick
Rated 5 out of 5
Date: 2025-08-01

Buit to military standards, tough as nails. This optic has been tried and true for 20 years. Add a modern RMR ontop, pretty sweet. I like the LED version as I can control or turn off when I choose. Sure you are a slave to a battery, but having that ability as opposed to a blaming over-bright Tridium light source is the pay payoff. Great eye relief, super quick acquisition both acog/rmr. It's fantastic for my competitions and everyday life.

See any errors on this page?

On Trijicon's web page the TA31RCO-M150CP has ...

On Trijicon's web page the TA31RCO-M150CP has tabs for mounting a RMR in your picture here it does not. So does it have them?
Asked by: William
The pictures you see on the B&H website are cut and copied from the manufacture website. It wiuld be the same product as seen ton the Trijicon website.
Answered by: John
Date published: 2023-05-23

Is the RMR a type 2, or type 1?

Is the RMR a type 2, or type 1?
Asked by: Blake
It is a type 2.
Answered by: Rob K
Date published: 2020-10-02

Does this model have bosses?

Does this model have bosses?
Asked by: Daniel
You can mount an RMR on your scope with BH #TRRM35. That is the part number you will find the RMR mount on the B&H website.
Answered by: John
Date published: 2020-02-27

question

Does this product come with lens covers just like the photo shows?
Asked by: Anonymous
Yes, the lens covers are included.
Answered by: Dana G.
Date published: 2018-08-27

Is the ilumination repairable?

Is the ilumination repairable?
Asked by: James
The tritium can be replaced by Trijicon by sending the optic in to them directly.
Answered by: Moe
Date published: 2021-12-31

Would I be able to remove the RMR and mount it on ...

Would I be able to remove the RMR and mount it on my pistol?
Asked by: Anwar
I can only verify that the Trijicon 4x32 ACOG Dual Illuminated Riflescope and 3.25 MOA Red Dot Type 2 RMR Sight Kit (DI .223 Red Chevron Reticle, Matte Black) BH #TR4X32RC223 • MFR #TA31-D-100549 Mounts on ACOG and comes with Trijicon ACOG Picatinny Rail Adapter
Answered by: John
Date published: 2022-05-22

question

How is this powered?
Asked by: Anonymous
By Fiber Optics.
Answered by: John P.
Date published: 2025-05-22

question

Specs say this RCO is designed for 14.5 inch barrel. Will it be ok on a 16 inch barrel? Trajectory of a 5.56 is pretty comparable regardless of barrel length I thought.
Asked by: H G.
The problem is one of velocity, not so much barrel length. Generally speaking the longer the barrel the higher the velocity. The difference in barrel length is 1 1/2 inch but remember that rarely does manufacturer specs match up with the actual velocity, too the outside temperature will affect the actual velocity. Unless you are a purist the difference is not worth worrying about. Also, the 223/5.56 is a very flat shooting cartridge, depending on the load and I am assuming a standard 55 grain load. With the right zero the bullet will never be more than 3 high or 3 low out to over 300 yards. If you hand load it would be a very easy matter to adjust the velocity if you felt the need to do so. Regardless of what ammo you shoot there will be variances in velocity unless you have match grade ammo. You can zero this scope wherever you want with the added benefit that it has range finding ability. By the way, the horizontal line is NOT for windage . . . . . the Chevron is used for that. The horizontal line is in Mil's . . . . . read the manual.
Answered by: Roger F.
Date published: 2018-08-27
  • y_2026, m_6, d_4, h_10CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.46
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_9
  • loc_en_US, sid_548980, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
Whatever You Need, We've Got It