Ballistic Adv Classic Series AR-15 5.56x45mm NATO 10.3" Government Barrel - Phosphate

The Ballistic Adv Classic Series AR-15 barrel is a 10.3 in Government-profile barrel for compact AR-15 builds chambered in 5.56x45mm NATO. Its carbine-length gas system uses a Crane-spec 0.070 in gas port and a 0.750 in gas-block journal.

Built from chrome moly vanadium steel, this barrel has a chrome-lined bore and chamber with a black manganese-phosphate finish. It uses a phosphate-coated M4 feed-ramp extension and 1:7 rifling twist.

The muzzle is threaded 1/2x28 for compatible muzzle devices. This barrel has no sights and weighs 18 oz.