Amer def q.D.Swivel/bipod mount for picatinny rails FEATURES-Enables you to attach a Harris bipod to your railed forearm (Not compatible with the Tac Lever)-Precision machined from 6061 T6 aluminum-Hard coat anodized for a lifetime of performance-Fully adjustable to fit both in spec & out of spec rail systems-Features the Patented QD Auto Lock(TM) Lever system-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 ensure maximum rail engagement