A low-profile, left side-folding, strut design compatible with all platforms utilizing an M1913 (Picatinny) interface at the rear of the receiver. The FS1913(TM) is a complete assembly offering pull-through opening and a solid lock-up when extended. Features: Advanced steel hinge design locks in both folded and extended positions Pull-through design offering quick deployment Includes a light-weight polymer (FS1913) strut US veteran designed and proudly made in the USA Product Includes: complete assembly, adjustable nylon strap FIT: Platforms with M1913 interface at rear of receiver (SIG MPX, SIG MCX, SIG Rattler, Rock River LAR-PDS, etc.) WIDTH [MAX]: 1.2" LENGTH: 9.6" (FS1913) / 9.25" (FS1913A) STRAP WIDTH: 1.0" WEIGHT: 10.0 oz (FS1913) / 13.0 oz (FS1913A) COLOR: Black