The TA31RCO is an Advanced Combat Optical Gun sight (ACOG)
designed for the M16A4 Weapon system (20” barrel). It incorporates
dual illumination technology using a combination of fiber optics and
self- luminous tritium. This allows the aiming point to always be
illuminated without the use of batteries. The Tritium illuminates
the aiming point in total darkness, and the fiber optic self-adjusts
reticle brightness during daylight according to ambient light
conditions. This allows the operator to keep both eyes open while
engaging targets and maintaining maximum situational awareness,
Designed to the exact specifications of the United States Marine
Corps, the unique reticle pattern provides quick target acquisition
at close combat ranges while providing enhanced target
identification and hit probability out to 800 meters utilizing the
Bullet Drop Compensator.
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