Faxon Firearms Big Gunner 8.6 Blackout 16" 1:3 Twist 4150 Steel AR-10 Barrel - Salt Bath Nitride

The Faxon Firearms Big Gunner is a 16" AR-10 barrel chambered in 8.6 Blackout, engineered for hard-use duty builds and suppressed setups on the AR-10 rifle platform. Machined from certified 4150 steel with a precise 1:3" twist button-rifled bore, this barrel is built to stabilize the heavy supersonic and subsonic projectiles that 8.6 BLK was designed around, giving shooters a versatile, suppressor-friendly option in the AR-10 family.

The barrel wears a salt bath nitride finish inside and out for corrosion resistance and extended service life under hard use. The muzzle is finished with a target crown to protect the rifling and support consistent accuracy shot after shot. The Big Gunner profile adds material along the length of the bore for improved heat dissipation and rigidity, making it a solid choice for sustained fire and as a host barrel for suppressor builds.

Designed to drop into the AR-10 platform, the Faxon Big Gunner 8.6 BLK is a no-compromise replacement or build component for shooters stepping into the 8.6 Blackout cartridge on a proven, mil-spec-compatible rifle platform.