Faxon Firearms 8.6 Blackout 8‚Äö√Ñ√Π 1-3 Twist Big Gunner Contour Chrome Moly Bbl

The Faxon Firearms 8.6 Blackout barrel is a purpose-built component for shooters building or upgrading an 8.6 BLK rifle. Developed in partnership with Q, this 8-inch barrel features a 1-3 twist rate optimized for the cartridge's subsonic and supersonic projectiles, channeling rotational energy to maximize downrange performance. Built from 4150 CMV steel with a Big Gunner contour, it delivers the rigidity and thermal mass serious shooters expect from a precision barrel.

Faxon manufactures every barrel from raw bar stock in their Cincinnati facility, applying a rigorous quality regimen that includes full stress relief, air-gauge testing, magnetic particle inspection, and an 11-degree target crown. Each barrel is individually headspace-checked against precision custom-hardened gauges and finished in Nitride for corrosion resistance and durability. That attention to detail shows in the accuracy potential—Faxon backs every barrel with a lifetime guarantee.

Before you fire, note that 8.6 Blackout is not yet SAAMI certified at the time of this barrel's release. Use appropriate caution with factory and reloaded ammunition, and consult load data from reputable sources. If you're building a short-barreled rifle for subsonic performance or a precision rifle for longer-range work, this barrel gives you a solid foundation.

Key Features

• 1-3 twist rate optimized for 8.6 Blackout projectiles
• 8-inch length in Big Gunner contour for rigidity and thermal stability
• 4150 CMV steel with Nitride finish for corrosion and wear resistance
• 11-degree target crown for accuracy
• Stress-relieved, air-gauge tested, and magnetic particle inspected
• Individual headspace verification on each barrel
• Lifetime warranty backing

Specifications

Frequently Asked Questions

Is this barrel compatible with standard AR-15 builds?

The Faxon 8.6 Blackout barrel is chambered in 8.6 BLK and will require an appropriate receiver and bolt carrier assembly set up for that cartridge. Confirm all components are compatible with 8.6 Blackout before assembly.

What ammunition should I use with the 1-3 twist rate?

The 1-3 twist is optimized for 8.6 Blackout projectiles across both subsonic and supersonic loadings. Consult Q and reputable reloading sources for load data. Because 8.6 BLK is not SAAMI certified, verify ammunition specifications and use appropriate caution, especially with reloaded rounds.

What testing does this barrel undergo before shipping?

Every Faxon barrel is stress-relieved, air-gauge tested, and magnetic particle inspected during manufacture. Before it leaves the facility, each barrel undergoes individual headspace verification using precision custom-hardened gauges and receives a final inspection.

Is there a warranty?

Yes. Faxon backs all of its barrels, including this 8.6 Blackout model, with a lifetime warranty.