The Faxon Big Gunner profile barrel in .308 WIN delivers superior performance for competition and duty applications with its 16-inch length and precision 1:10 twist rate.Faxon Big Gunner Profile BarrelCaliber: .308 WINBarrel Length: 16 inchesTwist Rate: 1:10Material: 4150 CMV SteelConstruction: Button RifledGas System: Mid-lengthFinish: Salt Bath Nitride (inside and outside)Gas Block Journal: .750" diameterMuzzle Thread: 5/8x24Engineered with a medium-taper behind the gas block and thinner forward taper for reduced weight while maintaining rigidity this barrel excels as a suppressor host and handles high rates of fire with exceptional accuracy and reliability.