The Rosco Manufacturing Purebred barrel (Rosco part number PB-16-HB-300BLK-8-P) is chambered in .300 AAC Blackout and machined from stainless steel with a nickel boron finish, measuring 16 inches with a 1:8 twist rate. Rosco built this barrel for precision carbine shooters running supersonic .300 Blackout ammunition, and it also works well as the foundation for a well-balanced hunting platform. It is a durable, corrosion-resistant option for a general-purpose 300 Blackout AR build.

Key Specifications

• Chambered in .300 AAC Blackout.
• Measures 16 inches in length.
• Rifled with a 1:8 twist rate.
• Finished in nickel boron.
• Machined from stainless steel.
• Part of Rosco’s Purebred barrel line.
• Suited for supersonic .300 Blackout ammunition.
• Works well for a well-balanced hunting platform.

Frequently Asked Questions

Is this barrel suited for subsonic ammo? Rosco built it for shooters running supersonic .300 Blackout ammunition.

What is the twist rate? 1:8.

What finish does it have? Nickel boron over stainless steel.

Rosco Purebred .300 Blackout Barrel For Sale

Build a durable, corrosion-resistant 300 Blackout upper for the range or the field. Order this Rosco Manufacturing barrel from our AR barrels lineup, and our Lubbock, Texas team will get it ready as soon as it is available to ship.