The Atlas BT46-Lw17 PSR Bipod has an extendable range of 4.75 to 9 inches and weighs 15.13 oz. With the addition of the ADM 170-S Lever the bipod will attach to M1913 Picatinny rails. The bipod is constructed of T6061 Aluminum that has been adonized to mil-spec. The bipod features 15° +/- of preloaded Pan and Cant but can be tightened. Made in America. Leg Positions: Stowed Back45° Back90° Straight Down45° ForwardStowed Forward B& T PSR Atlas Bipod with ADM-170-S BT46-LW17