Rosco Purebred 8.2 in Heavy Pistol Barrel (.300 AAC Blackout)

This Rosco Purebred 8.2-inch barrel is built for AR-15 pistol and SBR applications chambered in .300 AAC Blackout. It is offered in a heavy contour with a pistol-length gas system to support suppressed and short-barrel use while maintaining reliable gas operation. The barrel features a bead-blasted finish and a 1-7 rate of twist suitable for stabilizing a broad range of .300 BLK projectiles. Muzzle threads are 5/8-24 to accept common muzzle devices and suppressor mounts.

Key Specifications

• The barrel length is 8.2 inches.
• The cartridge is .300 AAC Blackout.
• The rifling twist rate is 1-7.
• The muzzle threads are 5/8-24.
• The gas system length is Pistol.
• The contour is Heavy.
• The finish is Bead Blasted.
• The barrel weight is 1.5 lbs.
• The fit is for AR-15 platforms.
• The color is Silver.

Compact and purpose-built, the Purebred 8.2-inch barrel gives shooters a robust option for suppressed pistols and short-barrel AR platforms where durability and function matter. Its heavy contour and consistent twist rate help preserve accuracy and barrel life under demanding use, while the bead-blasted finish resists glare and handles routine maintenance easily. For operators and enthusiasts building a short AR pistol or SBR in .300 AAC Blackout, this barrel balances compact form with practical performance.