The SB Tactical TF1913 Triangle Pistol Stabilizing Braceis a low-profile, left side-folding triangle design compatible with all platforms utilizing an M1913 (Picatinny) interface at the rear of the receiver. The TF1913TM is a complete assembly offering pull-through opening and a solid lock-up when extended. Gun Compatibility: Platforms with M1913 interface at rear of receiver (SIG MPX, SIG MCX, SIG RATTLER, Rock River LAR-PDS, etc.) Features a Complete assembly, ready-to-installa Advanced steel hinge design locks in both folded and extended positionsa Pull-through design offering quick deploymenta Rigid polymer substrate with flexible arm cuffa Comes with adjustable nylon strap for custom fita Veteran designed