Rosco Purebred AR-15 6mm ARC 1:7.5 Stainless Steel Barrel

The Rosco® Purebred AR-15 6mm ARC 1:7.5 Stainless Steel Barrel is an SPR profile barrel that boasts a step crown barrel crown and has a .750" gas block journal. Compatible with rifle-length gas systems, this barrel features a 1:7.5 twist rate of unmatched precision. Constructed from 416R stainless steel with a corrosion-resistant 80 grit bead blasted finish. The 5/8x24 thread pitch is perfect for use with your favorite muzzle devices. Barrel extension features a nickel boron corrosion-resistant finish.