The AD-SCOUT mount is made for putting high power glass onto a flattop style AR-15. The cantilever throws the scope out front, allowing you to get the right eye relief. The mount was also designed to accommodate the mounting of full size optics on a short rail, usually found on scout type rifles. 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. Features The AD-SCOUT mount features the Patented QD Auto Lock™ Lever system which has the following advantages: 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.