Faxon Firearms 300 AAC Blackout 10.5 in 1:8 Gunner Barrel

This Faxon Firearms Duty Series barrel is a 10.5 inch AR-15 barrel chambered in .300 AAC Blackout. The Gunner contour blends Government and Pencil profiles to reduce weight while maintaining durability and balance for short-barrel AR builds. It is button rifled from 4150 CMV steel and finished for matte black appearance in supplied listings.

Key Specifications

• The caliber is .300 AAC Blackout.
• The barrel measures 10.5 inches.
• The rifling twist rate is 1:8.
• The contour is a Gunner profile, combining Gov’t and Pencil characteristics.
• The barrel material is listed as 4150 CMV.
• The barrel type is Button Rifled.
• The muzzle is threaded with 5/8-24 threads.
• The product fits AR-15 platforms.
• The crown is an 11° target crown for consistent muzzle alignment.
• The listed weight is approximately 1.1 lbs.

The Duty Series Gunner contour barrel is built for shooters who want a compact, well-balanced AR-15 barrel without sacrificing durability. Its combination of a proven contour, precision button rifling, and attention to manufacturing tolerances makes it a solid choice for short-barrel builds where handling and repeatable performance matter. Whether assembling a compact range gun or a specialized project, this Faxon barrel delivers the core characteristics expected from a purpose-designed AR barrel.