The Trijicon ACOG 3x24 TA50-C-400348 with red horseshoe dot reticle calibrated for .223 55-grain ammunition is the fast-acquisition compact ACOG for 5.56 .223 AR platform shooters who want the Bindon Aiming Concept's instinctive both-eyes-open close-range speed combined with a ranging reticle calibrated specifically for the .223 55-grain ballistic trajectory - the Trijicon ACOG scope purpose-built solution in the standard height configuration for this cartridge in the horseshoe dot aiming format. The Trijicon TA50 TA50-C-400348 red horseshoe dot reticle calibrated for .223 55-grain gives AR platform shooters the correct holdover and ranging references for the specific trajectory of the most widely used .223 training and field load - correct calibration that makes the reticle genuinely useful at distance without any mental correction. The red horseshoe draws the eye instinctively for fast BAC close-range acquisition while the center dot provides precise aiming for medium-range shots. The Trijicon rifle scope TA50-C-400348 fiber optic and tritium dual illumination automatically adjusts the red horseshoe brightness to available ambient light - tritium maintains the illuminated reticle in complete darkness without batteries. The ACOG mounts compatible integrated mounting bosses near the eyepiece allow easy addition of a Trijicon RMR with the RM54 mount — not included - for a complete close-range and 3x precision dual optic system. The Trijicon ACOG 3x24 TA50-C-400348 includes the Compact ACOG Q-LOC mount - Mil-Spec drop test rated 6061-T6 aluminum with one-handed tool-free mounting and superior return to zero. Spring tension torque spec 12 to 16 inch pounds with optional tightening to 30 to 38 inch pounds. Features: Red horseshoe dot calibrated for .223 55gr - correct holdovers Battery-free tritium and fiber optic - always on Integrated RMR mounting bosses for dual optic setup Forged 7075-T6 aluminum - nearly indestructible Q-LOC mount with superior return to zero Compatible with any Mil-Spec or NATO Picatinny rail Trijicon ACOG 3x24 Dual Illum Red Horseshoe/Dot .223/55gr. Ballistic Compact Riflescope w/Q-LOC Mount TA50-C-400348