Brownells 75th Anniversary - A Shooting Heritage

The BCM AR-15 Enhanced Fluted Barrel in 300 Blackout offers all the performance and quality that is expected from a BCM product.

The Enhanced profile has a continuous taper which lends to a lightweight, balanced, and high performing barrel, and the fluting to the rear of the gas block helps to disperse heat and aid in the keeping the barrel weight down.

  • Caliber: 300 Blackout
  • Length: 9in.
  • Gas System Length: Pistol
  • Twist Rate: 1:7
  • Gas Block Diameter: .750
  • Exterior Finish: Manganese Phosphate
  • Bore Chamber Finish: Chrome Lined
  • Muzzle Threads: 5/8x24

BCM has taken great care to ensure the best possible performance and interchangeability. However, due to the large operational range of 300 Blackout ammunition in the market place, BCM cannot guarantee function will all ammunition types in all conditions. These barrels were designed to run with a carbine buffer with subsonic ammo and a H3 buffer with high velocity ammo. Fine tuning may be required in limited instances based on ammo choices and buffer choices that works best for their application.


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Cartridge: 300 AAC Blackout

Length: 9"

Finish: Black

Gas System Length: Pistol

Muzzle Threads: 5/8-24

Twist: 1-7