Trijicon ACOG- Advanced Combat Optical Gunsight

The name says it all! The ACOG®s are internally-adjustable, compact telescopic sights with tritium illuminated reticle patterns for use in low light or at night. Bindon Aiming Concept (BAC)* models feature bright daytime reticles using fiber optics which collect ambient light.

The ACOG®s combine traditional, precise distance marksmanship with close-in aiming speed. Although the ACOG®s 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.






TRIJICON ACOG TA31ECOSG Green and TA31ECOS Red. Plenty in stock, new 2016 production


  • Dark Earth Brown
  • The Trijicon ACOG ECOS is the ultimate sight for both Close Quarter Battle (CQB) situations and longer distance shooting where accuracy and pinpoint bullet placement are required
  • Trijicon is the first to market with its unique dark earth brown color, a definite factor to concealment- directly contributing to the safety of the operator, who is often in harm's way
  • This dual-sighting system gives the shooter a distinct tactical advantage with the option of either the Trijicon ACOG or the RMR Sight
  • With the quick target acquisition of the RMR Sight or the precise aiming capabilities provided by the magnified 4 power Trijicon ACOG the shooter has the ability to select the proper aiming solution for the situation at hand truly the best of both worlds.
  • No tools are needed for windage and elevation adjustments because the ECOS also features external windage and elevation adjusters, making it waterproof up to 11m without caps.

The TA31ECOS also includes:

1 3.25 MOA RMR LED Red Dot Sight mounted to ACOG (RM01)
1 A.R.M.S. Throw Lever Mount
1 Set of backup Iron Sights
1 Trijicon Logo Sticker (PR15)
1 ACOG BAC Manual
1 Warranty Card