This is a LEO overrun! Get an incredible package at a fraction of the cost. Package includes a 6" .300 Blackout AR-15 Barrel (SKU: BABL300013M) made by Ballistic Advantage for Angstadt Arms and our low profile gas block and pistol length stainless steel gas tube. Limited stock available. Once these are gone, they're gone forever! Pairs perfectly with our 5.5" ultra light handguard. Made from 4150 Chrome Moly Vanadium and finished with Melonite Chambered in .300 Blackout (BLK) Includes our low profile .750" gas block Pistol length gas system (6.6875? gas tube) included DRP profile 6? long 5/8x24 thread 1/7" 5R twist rate Barrel weight: 13.7oz