Faxon Firearms ARAK-21 Complete Upper Receiver 5.56 NATO 12.5" Barrel, Black - URSSB556P

This is a complete upper receiver assembly for AR-15 platforms chambered in 5.56 NATO with a 12.5" barrel. The upper features a black finish and is compatible with standard AR-15 lower receivers. Installation requires mating to a compatible lower receiver and is suitable for short-barreled rifle configurations.