TipTop&Acirc; Tactical Quicklock EZ Pivot QD Bipod 9" - 13": Picatinny Mount, Extendable, Folding, with Sling-attached Hole. PN#S9-94671 Rotate along the axial of rifle barrel up to 27 degrees Easy Level (Pivot) adjustment for uneven terrain Quickest one-step attached and detached for Picatinny (patent pending QuicklokTM) Durable design to manage recoil of the rifle. Stable, Light Weight, Sling-attached design; all-weather no-rust black anodized finish Direct Mounts to Mil Std1913 Picatinny rail without using bipod adaptor.