Atlas Bipod Comparison Chart The BT47-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. The PSR series of Atlas Bipods were developed for the SOCOM PSR (Precision Sniper Rifle) Weapons System (BT46-LW17 was selected for SOCOM PSR). Available in black only. LW17: Lever Mount With ARMS 17S Mount; How to function the ADM Mount UHMW components used for smooth tracking Preload on Pan and Cant can be tightened by means of the knurled knob Picatinny Rail Mount interface by either standard machine screw fastener based clamp or optional ARMS 17S lever mount Independent, intentional and non-orientated leg positioning allows either hand to move leg into any of the five leg positions Solid leg positions allows shooter to load the bipod at the 45 and 90 degree positions. Non-orientated leg length adjustment done by either hand: Outer leg slides on the Inner leg locating on any of five positions A 3/4" apart Optional 3" Leg Extensions to increase height Standard soft, durable Rubber feet that are suitable for many surfaces Optional interchangeable Ski, Spike, Cleat and Spiked Cleat feet easily swapped in the field with the press of a stainless steel plunger with a bullet tip Optional mounting systems available for Accuracy International and Sako rifles Specifications Height Range: 7.0 - 13.0" approximately Preloaded Pan: 15 degrees +/- Preloaded Cant: 15 degrees +/- Fore and Aft pivot limiting Bosses 5 leg positions: 0, 45, 90, 135 and 180 degrees Non-Rotating Legs: outer leg does not rotate around inner leg Larger, stronger inner legs Weight: 15.13 ounces Footprint: 10 - 14.5"