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

ACOG 1.5x16 with M16 Base, Red Crosshair Reticle and BAC.

This very compact model provides weapons like the M16/M4 with excellent fire control capability. Targets are easier and quicker to 
acquire through the 1.5x16 models because of the larger field of view (8.3 degrees) and eye-friendly design.