10.5" Barrel Made From 4150 QPQ Steel, With Carbine Length Gas Port and 1:7 Twist Rate
Caliber: 5.56
Barrel Length: 10.5"
Barrel Steel: 4150v
Barrel Coating/Treatment: QPQ Black Nitride
Gas System: Carbine
Twist Rate: 1:7
Muzzle Thread: 1/2x28 (RH)
Extension: M4
Profile: Standard
M16 Nickel Boron Full Auto BCG Assembly
Proudly Made in the USA