The DoubleStar Strongarm Pistol Brace is the next step in the evolution of Pistol Stabilizers. No soft foam to tear or plastic to shatter here, only rugged 6061 billet aluminum. Just like the rest of the DoubleStar and Ace product lines, the Strongarm Pistol Brace was designed for hardcore, freedom-Loving Americans who don't have time to worry about cheap import parts breaking at the worst possible moment. This Pistol Brace was built to last. Don't settle for cheap, Strongarm your pistol.This Assembly comes with the Strongarm Pistol Tube or SPT. Machined 6061 aluminum and a receiver lock nut ensure this tube is rock solid to support the awesomeness of the pistol brace. A QD Swivel pocket is machined into the rear for an extra place to sling up. carbine buffer, carbine buffer spring, and QD Swivel included.