The AD-68H High Profile Aimpoint mount features a lower 1/3rd co-witness when used on an AR15, M16, M4 flat top with Mil-Spec size iron sights. 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. ADM Aimpoint AD-68 STD Lever FDE High-Profile 1.93" Mount AD-68-HSTDFDE