The AD-MRO-CO mount is designed for the Trijicon Miniature Rifle Optic that places the optic in a true co-witness height. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock(TM) Lever system to accommodate both in spec and out of spec rail systems. Tactical Levers feature and extended thumb pad. Mfg: American Defense Manufacturing