The SBT Pistol Stabilizing Brace was developed in conjunction with B&T USA and designed after the iconic B&T stock for HK platforms. Featuring an integral, side-folding mechanism, the SBT fits the B&T APC and HK UMP pistols. Features: Integral, side-folding mechanism. Complete assembly, ready-to-install. ATF compliant, US veteran designed and proudly made in the USA. Product Includes: complete assembly, adjustable nylon strap.