Trijicon TA33-C-400164 ACOG 3x30mm Compact Dual Illuminatedx 40mm, Red Crosshair .300 Blackout 115/220gr Ball Reticle, Colt Knob Thumbscrew Mount The Trijicon ACOG 3x30 with 300 AAC Blackout reticle Powered by Trijicon's patented fiber optics and tritium based technology Battery free illuminated reticle Ballistic drop compensator for both supersonic and subsonic rounds Bindon Aiming Concept a revolutionary both eyes open method of aiming