For sale is a custom built complete upper receiver from B King Firearms. Features a Ballistic Advantage Hanson 11.3 5.56 Barrel with pinned gas block, Breek Arms 3 prong flash hider with removable flash can, BKing Mod-0 thermal fit upper with free float mod-0 handguard, Breek Arms Sledgehammer ambi gas busting charging handle, carpenter 158 BCG. Including a sling and MFT Blade pistol brace that fits on all Mil-Spec tubes.