American Defense Manufacturing QD Bipod Mount For ARCA Swiss Rail Black. This mount is only available with a standard lever. The special short throw lever design on this mount allows it to be loosened enough to slide the bipod to any position on the ARCA Rail while still retaining the mount to the rail. Designed to fit 38mm ARCA rails but is adjustable to fit larger widths such as 40mm also. Specifications for American Defense Manufacturing QD Bipod Mount For ARCA Swiss Rail: Manufacturer: American Defense Manufacturing Color: Black Finish: Anodized Fabric/Material: 6061-T6 Aluminum Features of American Defense Manufacturing QD Bipod Mount For ARCA Swiss Rail 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. Package Contents: American Defense Manufacturing QD Bipod Mount For ARCA Swiss Rail American Defense Manufacturing AD-ARCA-BP-P2-STD: QD Bipod Mount For ARCA Swiss Rail Black