The AR-10A2 Complete Upper Assembly features a double lapped, chrome lined barrel; assuring that the rear sight is centered and full left and right windage movement is available when shooting in strong winds.
Each ArmaLite Complete Upper Assembly includes a forged upper receiver assembly, barrel assembly, bolt carrier group and charging handle assembly. All complete upper assemblies are test fired as complete rifles before shipping.
AR-10 uppers use 7175-T74 aluminum.
Model: AR-10 A2 Complete Post-Ban Upper Assembly with Black Handguard
Caliber: .308/7.62 X 51mm NATO
Barrel: 20" Double Lapped, Chrome Lined, 4140 steel, M-4 Feed Ramps
Rifling Twist: RH 1:11.25"
Muzzle Device: Permantley afixed Muzzle Break
Front Sight Base: A2 Front Sight Assembly
Rear Sight: .70 / .195 Battle Sight
Upper Receiver: Forged A2 7175-T74 Aluminum