TipTop&Acirc; Tactical Quicklock EZ Pivot QD Bipod 13.5" - 23": Picatinny Mount, Quick Action, Extendable, Folding, with Sling-attached Hole. PN#S9-94672 Rotate along the axial of rifle barrel up to 27 degrees Durable design for managing recoil of the rifle. Stable, Light Weight, Sling-attached design; all-weather no-rust black anodized finish Easy Level (Pivot) adjustment for uneven terrain Quickest one-step attached and detached for Picatinny (patent pending QuicklokTM) Direct Mounts to Mil Std1913 Picatinny rail without using bipod adaptor.