Similar to the standard RECON, the RECON-X mount is made for putting high power glass onto a flattop style AR-15. The cantilever on the RECON-X provides extended eye relief over the standard RECON. At 3" of offset it proveds the longest built in eye relief of any ADM Mount. Precision machined from 6061 T6 Aluminum and finished in hard coat T3 Mil-Spec anodize. it features the Pantented QD Auto Lock Lever system to accommodate both in spec and out of spec rail systems Mfg: American Defense Manufacturing