The AD-RQD was designed to marry perfectly with the RICO Mk1, RICO Bravo, and RICO ALPHA. 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. 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. Fully adjustable to fit both in spec and out of spec rail systems.