This barrel is HP and MPI tested. Manufacturer: Aero Precision
Caliber: .308 Winchester
Length: 20"
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: QPQ Corrosion Resistant
Gas System Length: Rifle Length
Gas Block: .750
Twist Rate: 1:10 inches
Thread: 5/8x24
Barrel Extension: DPMS 308
Tags: 20" .308, aero precision cmv barrel, rifle length ar-10, 20 20 20", barrels 20" 20" 20" 20" 20" 20" 20"