Similar to the AD-RECON, the AD-RECON-X mount is made for putting high power glass onto a flattop style AR-15. The cantilever on the AD-RECON-X provides extended eye relief over the AD-RECON model. This mount provides the longest built in eye relief offered on our mounts. 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. For 34mm rings. American Defense Manufacturing ADM AD-RECON X 34mm Tac Lever Cantilever Scope Mount