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.

The new TA01ECOS is a 4x32 ACOG Scope that features a Dark Earth Brown color. It has a Center Illumination Amber Crosshair .223 
Ballistic Reticle.  

It comes with a mounted brown Docter® Sight, Backup Iron Sights, an A.R.M.S.® Throw-lever mount and a Dust Cover.