With Gas Piston reliability eliminating excess heat, carbon build up, and gas leaks (as well as gas rings, gas key, and gas tube), this new 5.56mm / .223 Caliber Upper Receiver/Barrel Assembly may be the future of the “AR”. The Hard Chrome Plated “Gas Trap” Piston is easily cleaned by removing it through a detented plug at the front of the Gas Block. The Gas Trap specific Bolt and Bolt Carrier are included, and the complete Upper Rec./Bbl Assembly will mount onto any standard pin dimension AR Type Lower Receiver. Includes Bushmaster’s One Year Warranty. COMPLETE! AR15 CONFIG 16" NEW FROM FACTORY!
$965 shipped CONUS THIS UPPER IS NEW