The AD-RECON mount is precision CNC machined from a block of 6061 T6 aluminum and finished in hard coat type 3 Mil-Spec anodize for a rock hard lasting finish. Precision machined from 6061 T6 Aluminum. Hard coat anodized for a lifetime of performance. Fully adjustable to fit both in spec and out of spec rail systems. American Defense MFG, LLC. products feature a lifetime warranty. Features the Patented QD Auto Lock Lever system. Made with pride in the U.S.A.