Trijicon ACOG 4x32 Scope Dual Illuminated Red Chevron ACSS Aurora Reticle

Manufactured by Trijicon
MPN: 100702
Manufactured by Trijicon
2 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 TA31 ACOG -- Advanced Combat Optical Gunsight, for the uninitiated -- is one of the most easily recognizable military optics available on the market today. Originally adopted by the US military in 1995, the ACOG is a fixed power and remarkably compact scope that combines close quarters speed with the ability to make precise hits at range. Their reputation for optical clarity and overall durability is both legendary and well deserved. To make the most of this battle-proven optic, Primary Arms has teamed up with Trijicon to offer the legendary TA31 with our new purpose-built and patent pending ACSS Aurora reticle!

  • Fully featured and intuitive ACSS Aurora reticle
  • 50-meter bullet drop compensation gradients to 800m
  • Integrated moving target leads for speeds up to 40mph
  • Full value wind holds for 5mph - 10mph winds from 400m to 800m
  • Automatic target ranging and BDC
  • 1/2 MOA tool-free click adjustments
  • Fixed 4X magnification
  • Expansive 36.8ft field of view at 100 yards
  • Superior optical clarity and light transmission
  • Red dual-illuminated, glass etched reticle powered by fiber optics and Tritium
  • Incredibly rugged construction is shock proof, waterproof, and fog proof

The ACSS Aurora reticle is our very first foray into meter-based ranging and fire solutions. The feature-rich and intuitive reticle design is uncluttered, designed to communicate vital information in an efficient manner to not only increase first-hit probability but drastically reduce the time necessary to reach a firing solution to get that hit. From 300m and in, the illuminated chevron aiming point provides wicked-quick snap shooting capability and both-eyes open engagement, so you never lose peripheral vision. The outer tips of the chevron pull double duty as leads for targets moving 3.1mph perpendicular to the shooter. For targets moving a bit faster, the two lead dots on either side of the chevron are leads for a target hustling along at 8.6mph. Aurora even compensates for mounted targets up to 40mph!

For engagements 400m and out, the integrated bullet drop compensation and wind leads come into play. The tried and true ACSS auto-ranging system allows for near-instant range estimation, which enables rapid transition to the BDC system that offers holdovers in 50m increments out to an impressive 800 meters. The real world often involves wind, and ACSS Aurora provides full value 5 and 10mph wind holds. Is the wind a little stronger or softer, maybe coming at an angle? Use the holds as a reference point and adjust accordingly. For operators in the field, no other reticle provides the combined capabilities and intuitive use of the ACSS Aurora.
See More


Eye Relief1.50 in
Field View 10036.65 ft
ReticleACSS Aurora
Turret FeaturesCapped Turrets, Finger Adjustable
Weight15.8 oz
  • Dimitri explains ACSS Aurora reticle features and use
  • MrGunsngear Reviews the ACSS Aurora Reticle
  • 50 Stitches Steel Trijicon ACOG ACSSS Aurora Review
  • NEW!!! Trijicon Aurora ACSS - 800m with 5.56 Made Easy! ~Rex Reviews
  • CountryMash Reiews the ACSS Aurora Reticle
  • ACOG vs LPVO by Garand Thumb

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

2 reviews

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

A fantastic optic with the best reticle available


Being my first ACOG I am impressed with the clarity if the glass. The 4x magnification is enough to greatly aid with longer range shots but allows the illuminated chevron to be used when firing at close distances. What really sets this optic apart from the other models is the reticle. I'm a big fan of the chevron but the Aurora line has many other built in features. This new Aurora reticle is a derivative of the ACSS line with built in range finding capabilities. With the Aurora reticle you can easily range a man-sized target from 300-800m using the width of the target's shoulders or 400-800m using the height of the body standing, or even half of the body (from belt to head). It also features wind leads for 5 and 10mph crosswind; and leads for a walking/running target. These features greatly increase the user’s chance of getting accurate hits outside of the static range. I've had no issues with eye relief and in my opinion, this is the best combat optic on the market today.

Unmatched capabilities in the Aurora reticle in a combat proven optic!


This optic is first rate! I have experience fighting overseas in both Iraq and Afghanistan using the Marine Corps issued RCO. This optic here is in the same combat proven optic but with a MUCH more capable reticle! The new Aurora ACSS reticle is unbelievable and gives the regular shooter so much more in terms of capabilities such as ranging the average human target with shoulder width, and by height. Additionally it has wind, running, walking, and fast mover holds! The U.S. Military seriously needs to get this in the hands of our war fighters! For anyone that is interested I've done a full blown review of this optic on my Youtube channel: