Designed in conjunction with Maxim Defense, the SBPDW Pistol Stabilizing Brace is 3-position adjustable and compatible with mil-spec bolt carrier groups and carbine buffers. 3-postion adjustable Complete assembly, ready-to-install, including a proprietary buffer tube (does not include buffer/spring) Compatible with mil-spec bolt carrier groups and carbine buffers/springs QD attachment point at 6 o clock position on housing ATF compliant, US veteran designed and proudly made in the USA Product Includes: complete assembly, adjustable nylon strap Product Specifications Fit: Mil-spec AR-15 receivers Length: 6.75 in (collapsed), 8.125 in (mid), 9.375 (extended) in Weight: 18.14 oz Width(Max): 2.25 in Strap Width: 1 in