This 5.56 chambered 18 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
This barrel features a longer .750” profile dimension necessary for proper installation of the OPS Inc 12th model collar and suppressor.
Material: 4150 Chrome Moly Vanadium
Finish: QPQ Corrosion Resistant
Gas System Length: Rifle
Gas Block Journal: .750″
Twist Rate: 1:7 inches
Muzzle: 1/2×28 Threaded
Weight: 41.0 oz