Faxon Firearms Match Series 308 Win 20" 1:10 5R Spiral Fluted AR-10 Barrel - 416-R Stainless Salt Bath Nitride

Upgrade your AR-10 with the Faxon Firearms Match Series 308 Win 20" Spiral Fluted Barrel, a precision-built replacement barrel machined from 416-R stainless steel and finished in black salt bath nitride for outstanding corrosion resistance and long-term durability. Designed specifically for the AR-10 platform, this 20-inch barrel features spiral fluting that sheds weight, increases surface area for cooling, and gives the rifle a distinctive match-grade look.

Chambered in .308 Winchester, the barrel is 5R button rifled with a 1:10" twist, a rifling geometry chosen to reduce bullet deformation and fouling while delivering consistent accuracy with a wide range of projectile weights. An 11-degree recessed crown protects the muzzle from contact damage and helps the bullet exit cleanly, while the .750" gas block journal and nickel-teflon plated (NP3) extension drop right into a standard AR-10 upper.

Built by Faxon Firearms in the USA to tight tolerances, this Match Series barrel is a drop-in upgrade for precision AR-10 shooters running the .308 Winchester chambering. Whether you are building a long-range DMR, hunting rifle, or target rig, this barrel delivers the consistency and accuracy that defines the Match Series line.