The BT47-LW17 PSR (Precision) Atlas Bipod mounts directly to any 1913 style Pica tinny 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) Weapons System (BT46-LW17 was selected for SOCOM PSR). Available in black only.