Faxon 8.6 Blackout Barrels – Precision Meets Innovation
Faxon Firearms is the industry leader in 8.6 Blackout barrel development—pioneering this revolutionary caliber from the start. Our 8.6 BLK barrels are designed for extreme subsonic performance, devastating terminal ballistics, and unmatched suppressor synergy. Built from the ground up for the AR-10 platform, Faxon’s barrels let you harness the full power of 8.6 Blackout in a format that's accurate, reliable, and ready for real-world use.
With a radical fast-twist 1:3 barrel twist rate, our 8.6 BLK barrels stabilize heavy bullets—like 285 to 350+ grain subsonics—while maximizing energy transfer and rotational force. Whether you're hunting with subsonics, experimenting with supersonics, or building a suppressed powerhouse, Faxon 8.6 Blackout barrels set the benchmark for innovation and performance.
Built for the AR-10 Platform
Faxon's 8.6 BLK barrels are designed specifically for DPMS Gen 1-compatible AR-10s and feature:
- 1:3 twist rate for heavy, subsonic projectile stabilization
- Barrel lengths from 8” to 12” for optimized suppressed builds
- 4150 CMV (Duty Series) or 416-R Stainless (Match Series) construction
- Tapered profiles for enhanced balance and reduced weight
- Threaded muzzle: M18x1.5 for suppressor-ready performance
- Finish options include QPQ nitride or media-blast with honed & lapped bore
Duty Series vs. Match Series
Choose from our rugged Duty Series 8.6 BLK barrels, made from 4150 CMV steel with QPQ nitride coating, or upgrade to Match Series barrels made from 416-R stainless steel, - or our mixed media-blast finish Match Series barrels featuring a honed and lapped bore for benchrest-level uniformity and minimal fouling.
Why Faxon for 8.6 Blackout?
Faxon was one of the first manufacturers to support 8.6 Blackout and continues to lead with constant innovation, proprietary testing, and commitment to quality. All barrels are Magnetic Particle Inspected (MPI), stress relieved, and backed by our Lifetime Guarantee. Whether you're building for hunting, personal defense, or suppressed shooting, Faxon has the right 8.6 BLK barrel for your setup.
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The future of subsonic performance starts here.
Explore the full line of
Faxon 8.6 Blackout barrels and discover the most advanced AR-10 barrel on the market today.