Faxon Firearms Ion Ultralight Complete Upper Receiver, 5.56 NATO, 16" Barrel, M-LOK - FX5500U

Complete AR-15 upper receiver assembly chambered in 5.56 NATO with a 16" barrel and 13" M-LOK handguard. Features Faxon's Ion ultralight design for reduced weight while maintaining durability. This is a drop-in component compatible with standard AR-15 lower receivers.