DealThis A2 upper receiver comes complete with charging handle, bolt carrier assembly, fully adjustable rear sight, A2 front sight with sling swivel, fixed carry handle, bayonet lug and threaded muzzle with A2 birdcage flashhider. The 20" button rifled barrel is chambered for 5.56mm NATO and comes with a 1 in 9" twist rate for accuracy with a wide range of bullet weights. Ready to install on any normal AR-15 lower receiver. Lifetime factory warranty. Technical Information Upper Receiver Type: A2 Upper Barrel Length: 20" Barrel Contour: Not listed by manufacturer Barrel Material: 4140 Chrome Moly Steel Muzzle Thread Pattern: 1/2"-28 Chrome Lined: No Barrel Finish: Black Matte Twist Rate: 1 in 9" Chamber: 5.56x45mm NATO & .223 Remington M4 Feed Ramps: Yes Muzzle Device: A2 Flash Suppressor Gas System Length: Rifle Gas Block Diameter: .750" Handguard: M4 Polymer Handguards Sights: A2 Front Sight, Adjustable A2 Rear Sight Bolt Carrier Assembly Included: Yes Bolt Carrier Type: Commercial from Midway USA (Product 663709) |