Knights Armament Company SR-15 in good condition. Firearm is used with signs of use. It comes as is with the lower receiver box. Lower receiver is a complete KAC lower. Upper receiver is KAC with an 11.5" KAC barrel and gas system, a KAC URX 5 handguard, KAC E3 2.0 Bolt, KAC 3 Prong Flash hider, KAC standard 600m rear sight, KAC MK18 front sight (not shown), and a Radian Raptor charging handle. Firearm is all Knights Armament Company except for the Radian charging handle.