Trijicon ACOG 1.5x16S High Compact Scope - Dual Illuminated ACSS CQB-M5 - Red

Manufactured by Trijicon
SKU: TA44-C-400306
MPN: TA44-C-400306
Manufactured by Trijicon
6 Reviews

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Primary Arms joins forces with Trijicon, combining the legendary TA-44 Mini-ACOG with the patented Advanced Combined Sighting System (ACSS®) reticle system. The TA-44 is incredibly small and light, measuring just 4 inches long and weighing in at only 5.1 ounces. The forged 7075-T6 aluminum body stands up to punishing abuse, and the glass clarity is world famous. Inside this TA-44 you will find our patented ACSS® CQB-M5 reticle, combing bullet drop compensation for 5.56 NATO, 5.45x39mm, and .308 Win with automatic ranging. No optic of this size and weight has offered this combination of advanced features before!

This TA44-C-400306 model features red reticle illumination powered by fiber optic light gathering in daytime and tritium in the dark. No batteries are needed. A tall base is machined into the scope body for use on AR-15s and other rifles with an in-line style stock that sits high relative to the Picatinny rail mount.

Exclusive to and Primary Arms authorized dealers.

Other TA44 ACSS® options include:

Trijicon 1.5x16S Compact ACOG with Green ACSS Reticle and AR-15 / Tall Base

Trijicon 1.5x16S Compact ACOG with Red ACSS Reticle and AK-47 / Low Base

Trijicon 1.5x16S Compact ACOG with Green ACSS Reticle and AK-47 / Low Base
See More
TA44-C-400306 MANUAL


Eye Relief2.40 in
Field View 10039.00 ft
ReticleACSS CQB-M5 5.56
Turret FeaturesCapped Turrets, Finger Adjustable
Weight5.1 Oz
TA44-C-400306 MANUAL
  • TA-44 ACSS at 500 yards with MrGunsNGear
  • TA-44 ACSS full review with Sootch00
  • GarandThumb: TA44 ACSS is for the apocalypse
  • MrGunsNGear and Dimitri fully review the TA44 ACSS
  • Armslist Media Product Spotlight: TA44 ACSS
  • Special Ops review of the ACSS Mini-ACOG | Tactical Rifleman

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

6 reviews

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ACOG and ACSS = Perfection!

by -

I purchased this for my BCM 300 Blackout SBR build. The rifle is configured for primiarily for subsonic loads and the 1.5 magnification provides plenty of reach for 200 yrds. The glass is crystal clear and the reticle is highly visible in all lighting conditions! The ultimate plus is my astigmatism is a non-factor. I can pick up the circle for CQB and the dot looks sharp and pinpoint for longer shots. Save up and get one!

Trigicon ta44 acss


Great little optic. good alternative to a red dot if you have astigmatism like me. The glass is exellent but the reticle is very small can be a little hard to make out the aiming points in less than ideal lighting conditions but it is still useable. I am planning on buying another one soon.
<br> Thank you primary arms.

Surprising excellence


I've had this little guy for about half a year now and it has become one of my favorite general purpose optics. The eye box is so massive that I can hold the rifle out like a pistol and still find the reticle. The magnification isn't enough that it slows you down much when running around doing close stuff, however having the trijicon glass out in front makes everything you're looking at really pop in sharpness and clarity which helps a lot when making longer shots, shooting in dim light, or trying to find a steel target that has had all its paint shot off and blends into the range background. The BDC makes shots that would be incredibly difficult with a red dot much easier. It's not as capable at making long shots as an LPVO but you also don't have to put a boat anchor on top of your rifle. I don't know how to further extol its virtues other than it just makes shooting easy and pleasant. No one expects something as strange and seemingly useless as a 1.5x ACOG to be this good.



This optic is awesome! I must say that you may find the etching on the reticle to be a bit small for your liking if your eyes are not the greatest. Still you should be able to use it though.

Easy to make hits


Great little ACOG! The 1.5x is excellent for allowing you to clearly make out targets better than with the naked eye. Also the ACSS reticle is incredible. I can only speak for MK262 77gr ammo from a 14.5 inch barrel but I was easily able to calibrate the reticle to make hits from 0-500 yards regularly. At 400 yards I would say over a 90% hit percentage on IPSC steel. 500 yards is not much worse. Just keep in mind that if you have an A2 front sight you need a riser for it otherwise this is a win for you CQB to medium range do all rifle. No batteries required ;).

Bombproof Optic Perfected by The ACSS Reticle


Bombproof optic perfected by the ACSS reticle. The reticle really lets you take advantage of the 1.5x, while still being really quick to use up close. Also Primary Arms helped a ton helping me get the zero dialed in just right. It's insanely lightweight, and has in incredibly forgiving eye box. Perfect optic to finish off a quality build, can't say enough good things about it.