Trijicon ACOG 4x32 Scope w/Red Dual Illuminated Doughnut Reticle BAC-M16/AR15 Black TA31. The reticle of the Trijicon TA31 ACOG 4x32 Tactical Scope ranges out to 800 Meters for 5.56(.223 cal) and hit fast in any light. Trijicon ACOG 4 x 32 Rifle Scopes...