The FS1913 stabilizing brace, by SB Tactical, is ATF compliant, US Veteran designed, and proudly made in the USA! This low-profile, left side-folding, strut design is compatible with all platforms that utilize an M1913 interface at the rear of the receiver. The FS1913 is a complete assembly that offers pull-through opening and solid lock-up when extended and folded. The FS1913 also includes an adjustable nylon strap.