Trijicon ACOG 4x32 Dual Illumination Red M855 RCO Reticle Rifle Scope

The Trijicon ACOG TA31USN-M855 is a 4x32 Advanced Combat Optical Gunsight designed for the M16A4 (20" barrel) and M16/M4 (14.5" barrel) weapon systems. It features dual illumination technology combining fiber optics and self-luminous tritium, keeping the aiming point illuminated at all times without batteries. The tritium element provides aiming point visibility in total darkness, while the fiber optic system automatically adjusts reticle brightness in daylight based on ambient light conditions. Includes a red M855 Rifle Combat Optic (RCO) reticle.