All parts of upper are made in USA and Assembled in house.Upper: Aero Precision AR15 Upper with forward assistBarrel: 10.5” 5.56 NATO Barrel (Lifetime Warranty)Barrel Material: 4150 Chrome Moly Vanadium ParkerizedBarrel Profile: M4 BarrelBarrel Twist: 1:7 Twist RateGas Block: .750Gas System: Pistol Length Gas SystemThread: 1/2x28Handguard: 10" 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.
