SIG Sauer's SB15 Pistol Stabilizer Brace improves the single-handed operation of AR-style buffer-tube-equipped pistols. This veteran-designed system boosts accuracy and reduces felt recoil. High-quality elastopolymer construction is designed to close tolerances and fits all pistols that use an AR-style 1"-1.2"-dia. buffer tube. Brace uses shooter's forearm to provide stability to minimize spin and shift. Flexible cuff with two adjustable nylon straps fits any user. Quick and easy to install. ATF compliant. Kit includes: Phase 5 hex tube, action spring and locking nut.