American Tactical Imports AR-15 Complete Upper, 450 Bushmaster

450 Bushmaster caliber upper receiver. 16in barrel 1:24 twist with 15in Keymod rail and 5/8×32 flash hider. Nitride bolt carrier group. Browse and shop all of our 450 Bushmaster Upper Receivers today! Specifications for American Tactical Imports AR-15 Complete Upper, 450 Bushmaster: Manufacturer: American Tactical Imports Cartridge: .450 Bushmaster Barrel Length: 16 in Finish: Matte Color: Black Handguard Length: 15 in Gun Rail: KeyMod Gun Model: AR-15 Magazine Included: No Features of American Tactical Imports American Tactical Milsport Rifle Upper .450 Bushmaster 16 Barrel Black with 15 Free Foad MLOK Handguard: Forged aluminum Mil-Sport AR-15 pattern upper receiver 16″ barrel with 1:24 button cut rifling and black nitride finish Chambered for 450 Bushmaster 15″ aluminum free floated key-mod rail system Carbine length low profile DGIS gas system A2 style compensator Package Contents: American Tactical Imports 450 Bushmaster Upper 16 inch BBL Parkerized 15 inch Keymod Rail