The AD-AEMS Mount by American Defense Manufacturing was designed as an upgrade (or replacement) for the Holosun AEMS Red Dot Sight. Its precision machined from 6061 T6 aluminum and given a hard coat T3 Mil-Spec anodized finish to ensure maximum resistance to corrosion and the elements. The AD-AEMES Mount attaches to the host weapon via ADM’s patented QD Auto Lock system, which allows the mount to accommodate both in-spec and out-of-spec rail systems, and provides superior clamping surface to deliver the highest level of rail engagement. In addition, the AD-AEMS Mount is available in absolute co-witness, lower 1/3 co-witness, 1.93" and 2.33" NV heights. Features of the AD-AEMS Mount: The AD-AEMS mount features the Patented QD Auto Lock Lever system. 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. American Defense Manufacturing ADM Holosun AEMS QD 1.93" Mount w/TAC Lever AD-AEMS-H-TAC