Bushmaster 0040008BLK M4 Patrolman’s Upper 5.56x45mm NATO 20″ Black Rec/Barrel f

Crafted to Proven Perfection, M4 Patrolman’s complete upper receiver is designed to be the heart of Bushmaster Firearms. Durable and Reliable Platform made in the U.S.A. Caliber: 5.56x45mm NATO Barrel Length: 20″ Barrel Finish: Black Receiver Finish: Black Handguard Finish: Black Barrel Length Range: 20″ to 20.99″