Ballistic Advantage 10.3" 5.56 Government Profile Carbine AR-15 Barrel, Classic Series

Ballistic Advantage 10.3" 5.56 Government Profile Carbine AR-15 Barrel, Classic SeriesThis 5.56 chambered 10.3 inch Government Profile Classic Series Barrel is machined from 4150 Chrome Moly Vanadium steel with chrome lined bore and chamber with a manganese phosphate finish and phosphate coated M4 feed ramp extension.Specs:Length: 10.3"Material: 4150 Chrome Moly VanadiumProfile: GovernmentFinish: PhosphateTwist Rate: 1:7 inchesGas System Length: CarbineGas Block Journal: .750"Muzzle: 1/2x28 ThreadedWeight: 18ozOther Info: Crane Spec .070" Gas Port