Trijicon ACOG 4x32mm Scope - Dual Illuminated ACSS Reticle - Red

Manufactured by Trijicon
Manufactured by Trijicon
3 Reviews

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.
Receive FREE shipping on your entire order when you purchase this item.



The Trijicon ACOG brings precision aiming and close quarters speed together in an advanced, combat-ready, and compact package. Extremely durable, these proven combat optics feature dual-illuminated reticles lit by fiber-optic for daylight illumination and tritium for low light operations. Offering unparalleled field of view, simplicity, and glass clarity, the ACOG is the ultimate do-everything optic for the modern sporting or combat rifle.

The TA31 is a fixed 4x optic designed to provide fast hits at close quarters with both eyes open. This special edition ACOG features our patented ACSS Reticle offering superior first-hit capabilities out to 800 yards! The ACSS is compatible with 5.56 NATO, .308 Winchester, and 5.45x39.

Exclusive to and Primary Arms authorized dealers.

  • Expansive field of view
  • Superior optical clarity
  • Reticle illuminated by fiber optics and tritium
  • No batteries required
  • Bomb-proof construction
  • 4x fixed magnification is optimal for close to mid-ranges

Trijicon has been building and designing brilliant aiming solutions for the United States military and consumers since 1981. Trijicon is world-renowned for the innovation of tritium and fiber-optics in their optics and the manufacturing processes required to build durable optics. Backed by a lifetime warranty, Trijicon scopes will provide the best outcomes in any situation whether it be on the range or in the field. 
See More


Click Value1/2 MOA
Exit Pupil Diameter8.00 mm
Eye Relief1.50 in
Field View 10036.80 ft
Focal PlanePrism Scope
Maximum Magnification4
Minimum Magnification4
Night Vision CompatibleNon-Compatible
Objective Diameter32mm
ReticleACSS 5.56/.308
Reticle TypeBDC
Tube DiameterNot Applicable
Weight15.8 Oz
  • ACSS Reticle Explained in Detail by MrGunsNGear
  • Trijicon TA-31 w ACSS Reticle Review by MrGunsNGear
  • What Really Makes the ACOG so Different by TiborasaurusRex
  • HiJack86 takes the ACSS ACOG to 500-800 yards

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

3 reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Finally an ACOG with a multi-faceted DMR reticle design!


Most useful ACOG yet! These ACSS reticles are by far the best Trijicon has to offer for real-world DMR/rifleman combat apps. First off, you get instant ability to make precise wind hold-offs and target-lead corrections. Second, you get the horseshoe (for quick, point-blank apps) AND the small chevron reticle (for precision) – the best of both worlds. Third, ranging targets using the ACSS scaled brackets is set up right. After multiple tens of thousands of rounds down range through various AR configurations, I think these Trijicon ACOGs are top of the line. Prismatic optics are incredibly heavy-duty and the clarity is incredible on these, perhaps due to the tier-1 Schott Bk4 and Bk7 glass in the prisms. If you want an ACOG, this is the one to get!

ACOG from Primary Arms

by -

Really love this scope. The ACSS reticle is awesome, able to site in fast for closer targets not has fast as a true red dot but my group at 200 yards is half what is was before. I'm sure the more I use it the quicker I'll get. Looking forward to shooting at some 400 to 600 yards out. Getting use to shooting with both eyes open and starting to see how fast you can find new targets. I first ordered this from another site but after the second delay (10 to 20 days). I cancelled that order and placed it with Primary Arms and had my scope within a week. Outstanding. Thank you Primary Arms.

Best RED DOT 4X Zoom for the money !!


I bought this Acog and am very pleased with my purchase and happy with my product. Also got a big discount on sale as well, what more do you want :) not battery operated and lifetime warranty thru Trijicon !!!