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. Product Features Advanced steel hinge design locks in both folded and extended positions Pull-through design offering quick deployment ATF compliant, US veteran designed and proudly made in the USA Product Includes: complete assembly, adjustable nylon strap Product 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" Length: 9.6" Strap Width: 1.0" Weight: 10.0 Oz Color: Black