All parts of upper are made in USA and Assembled in house.Upper: Aero Precision AR15 Upper with forward assistBarrel: 16” 556 NATO Barrel (Lifetime Warranty and MOA Guarantee)Barrel Material: 4150 Chrome Moly Vanadium ParkerizedBarrel Profile: M4 BarrelBarrel Twist: 1:1 Twist RateGas Block: .750Gas System: Carbine Length Gas SystemThread: 1/2 x 28Handguard: 15" MLOK Rail
BCG: Black Nitride BCG, Nitride Finish, 9310 Steel Magnetic Particle Inspected(MPI) Bolt, Tool Steel Extractor. (Lifetime Warranty)
Charging Handle: Ambi Charging HandleFits mil-spec AR-15 Lower.
Fits mil-spec AR-15 Lower.
