Ballistic Advantage, Modern Series, M4 Profile Barrel, 223 Remington/556NATO, 14.5″, Carbine Length Gas System, 1:7 Twist, 1/2X28 Threads, 4150 CrMoV, QPQ Corrosion Resistant Finish, Black
Material: 4150 Chrome Moly Vanadium
Finish: QPQ Corrosion Resistant
Twist Rate: 1:7 inches
Gas System Length: Carbine
Gas Block Journal: .750″
Muzzle: 1/2×28 Threaded
Ballistic Advantage’s 5.56 chambered 14.5 inch M4 Profile Carbine Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.