Quick view Trijicon Trijicon Acog, Trj 100173 Ta55 5x50 W/mnt 223 Red $1,956.22 $1,537.03 The acog is internally-adjustable, compact telescopic sights with tritium-illuminated reticle patterns for use in low light or at night.It combines traditional, precise distance marksmanship with close-in aiming speed.This model is designed for use with... Compare Add to Cart