A low-profile, left side-folding, strut design compatible with all platforms utilizing an M1913 interface at the rear of the receiver. The FS1913™ 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 Aluminum strut for added strength Pull-through design offering quick deployment ATF compliant, US veteran designed and proudly made in the USA Product Includes: complete assembly, adjustable nylon strap FS1913™ SPECIFICATIONS FIT: Platforms with M1913 interface at rear of receiver (SIG MPX, SIG MCX, SIG Rattler, Rock River LAR-PDS, etc.) WIDTH [MAX]: 1.2 in LENGTH: 9.6 in STRAP WIDTH: 1 in WEIGHT: 10 oz COLOR: Black