Rosco Manufacturing, Bloodline Barrel, M4 Profile, 556NATO, 16" Threaded Barrel, 1/2X28 Thread Pitch, 1:7 Barrel Twist, 4150 CMV, Mid-Length Gas System, Fits AR15, Nitride Finish, Black
16", Mid-Length Gas System
1/2X28 Muzzle Threading
1:7 Twist
4150 CMV Construction
Nitride Finish