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. ADM Holosun AEMS QD Co-Witness Mount w/LH Ti Lever AD-AEMS-10-TL