ACOG 4x32 Scopes with Red Dual Illumination & BAC—M16 / AR15. Features Dual Illumination (Fiber Optic provides daylight illumination and tritium illuminates reticle at night). The reticle ranges out to 800 meters for 5.56(.223 cal). * Trijicon ACOG Advanced Combat Optical Gunsight * 4x magnification with 32mm objective * Fiber Optic profives daylight illumination * Tritium illumination provides illumination at night * Reticle ranges out to 800 meters for 5.56 (.223 cal)