Atlas PSR with ADM 170-S Lever Bipod - The BT46-LW17 PSR (Precision Sniper Rifle) Atlas Bipod mounts directly to any 1913 style Picatinny rail via the included ADM-170-S lever. It is comprised of 6061-T6 aluminum, except the strengthened inner legs which are made from 7075-T6 aluminum that are Mil-Spec Type III hard coat anodized and have heat treated, stainless steel components. Height Range: 5.2 - 9.6in (6.8in At 90 Degrees) Preloaded Pan: 30 Degrees Preloaded Cant: 30 Degrees Position Button 0.5in Diameter Fore And Aft Pivot Limiting Bosses 5 Leg Positions: 0, 45, 90, 135 & 180 Degrees Non-Rotating Legs: Outer Leg Does Not Rotate Around Inner Leg Larger, Stronger Inner Legs Weight: 13.61oz Approximately Footprint: 8–11in