The Faxon Firearms 8.6 Blackout Barrel (brand part no. 110B863N12NMQ) is a 12-inch barrel chambered in 8.6 Blackout and machined from 416-R stainless steel with a black Salt Bath Nitride finish. Faxon rifles the bore with an unusually fast 1:3-inch twist rate to stabilize the heavy, subsonic-focused bullets that define the 8.6 Blackout cartridge, making it a purpose-built option for shooters running a suppressed, subsonic-capable AR-10-pattern build.

Key Specifications

• Chambered in 8.6 Blackout.
• Measures 12 inches in barrel length.
• Rifled with a fast 1:3-inch twist rate for heavy, subsonic-focused bullets.
• Machined from 416-R stainless steel.
• Finished in black Salt Bath Nitride.

Frequently Asked Questions

Why does this barrel use such a fast twist rate? The 1:3-inch twist stabilizes the heavy, subsonic-focused bullets used in 8.6 Blackout.

What material is this barrel made from? 416-R stainless steel with a Salt Bath Nitride finish.

Buy the Faxon Firearms 8.6 Blackout Barrel

Build a purpose-made subsonic 8.6 Blackout upper on a fast-twist Faxon barrel. Order it from our FAXON FIREARMS lineup of AR10 barrels as soon as it’s ready to ship from our Lubbock, Texas gun shop.