Brand new. Only function checked. Upper, lower and handguard gaurd are Geissele. Barrel is 11.5 centurion FBI chrome lined hammer forged with their tabbed gas block. Centurion dual ejector bolt, KAC bolt carrier. Geissele SSA trigger, take down pins and safety selector. Geissele charging handle is NSN marked. Surefire 3 prong flash hider. LMT receiver extension, H2 buffer and spring.