Complete Upper 308 16"

Barrel Length: 16"
Gas System: Mid-Length
Barrel Profile: A2
Barrel Steel: 4150V Chrome Moly Nitride Finish
Barrel Finish: Nitride  
Chamber: .308 WIN
Twist Rate: 1/10"
Barrel Extension: M4-style
Diameter at Gas Block: .750
Gas Block Type: Low-profile 
Gas Tube: Black Nitride or Stainless 
Receiver Material: Forged 7075 T6
Receiver Type: Aero Precision
Handguard Type: 15" M-Lok Free Float Rail
Bolt Carrier Group Included: Yes 
Charging Handle Included: Ambi Charging Handle