SB Tactical SBA3 Pistol Stabilizing Brace - Black Minimalist design 5-position adjustable Includes 7075 mil-spec carbine receiver extension Integral, ambidextrous QD sling socket ATF compliant, US veteran designed Designed for all platforms capable of accepting a mil-spec carbine receiver extension, the SBA3 is 5-position adjustable, dramatically enhances versatility, and features a minimalist design with an integral, ambidextrous QD sling socket. *Castle Nut Included