This Jefferson Armory War Machine MK3 complete upper receiver is a precision-built upper receiver assembly featuring a forged mil-spec upper receiver, 16″ mid length nitride barrel, M16 nitride BCG, Jefferson Armory MCR2-15 lightweight free float M-lok handguard, Radian Raptor Ambi charging handle .
Product Details:
- Caliber: 5.56 NATO
 - Barrel Length: 16″
 - Barrel Material: 4150 CMV
 - Gas System: Mid-Length
 - Gas Block Diameter: .750″
 - Gas Block Type: Low Profile
 - Barrel Profile: Government Profile
 - Barrel Feed Ramps: M4
 - Twist Rate: 1-7 Twist
 - Barrel Finish: Black Nitride
 - Muzzle Thread: 1/2-28
 - Muzzle Device: A2 Flash Hider
 - Handguard: Jefferson Armory MCR2-15 Lightweight Free Float M-LOK Rail
 - Upper Receiver: Forged 7075 T6 Aluminum
 - BCG: M16 Black Nitride
 - Charging Handle: Radian Raptor Ambi
 
								



