American Defense AD-RMR-CO STD Riflescope Optic Mount, Black The AD-RMR-CO Mini mount was designed to mount the trijicon rmr to a Picatinny rail and provide an Absolute co-witness iron sight picture when used with Standard A2 height sights or Gen2 magpul mbus Height above the rail is 0.87 It is precision Machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize It features the patented QD auto lock lever System to accommodate both in spec and out of spec rail systems Does not require proprietary tools for adjustment Can be adjusted with your finger or a flat blade screwdriver Lever can be configured to lock to the front or the rear Superior clamping surface to insure maximum rail engagement