Designed by Q, the SB Tactical HBPDW is the adaptation of the iconic Honey Badger Pistol Stabilizing Brace for the AR-15 lower receiver. Lighter and shorter, the HBPDW is the evolution of the adjustable PDW-style brace, giving you all of the advantages of a pistol with improved control by adding an additional point of contact for stabilization. FeaturesLightweight, low-profile, and short3-position adjustableIntegral, ambidextrous QD sling socketCompatible with mil-spec bolt carrier groups and AR lowersUS veteran designedIncludes: Complete assembly, Buffer and spring assembly, Buffer tube, Castle nut, Castle nut wrench, Adjustable nylon strap Note: AR9 platforms that utilize CMMG's Radial Delayed Blowback (RDB) system will need to use the HBPDW 556 version. The buffer included with the 9mm HBPDW will not fit.