The Faxon Firearms Match Series AR10 barrel (brand part no. 10B810R20FHQ-5R-NP3) is a 20-inch .308 Winchester barrel built for accuracy-focused AR10 builds. Machined from 416-R stainless steel with 5R button rifling, it uses a 1:10 twist rate suited to a wide range of .308 bullet weights. Faxon finishes the bore and exterior in a salt bath nitride for corrosion resistance and long service life, then adds heavy fluting to shave weight without sacrificing barrel stiffness. With a DPMS LR-308 compatible extension and a rifle-length gas system, it is a strong upgrade for precision or general-purpose AR10 rifles built on the DPMS pattern.

Key Specifications

• Chambered in .308 Winchester for compatibility with common precision and hunting loads.
• Measures 20 inches in barrel length for a balance of velocity and maneuverability.
• Uses a 1:10 twist rate suited to a wide range of .308 bullet weights.
• Rifled with 5R button rifling machined into 416-R stainless steel for accuracy and easy cleaning.
• Finished in salt bath nitride inside and out for corrosion resistance and extended barrel life.
• Heavy fluted profile reduces weight while maintaining barrel stiffness.
• Built with a DPMS LR-308 compatible extension coated in nickel Teflon for smooth fit and corrosion resistance.
• Runs a rifle-length gas system with a 1.1-inch gas journal.
• Weighs approximately 2.4 pounds, keeping the build reasonably balanced despite the heavy profile.
• Finished with a recessed target crown to protect the muzzle and support accuracy.

Frequently Asked Questions

What caliber is this barrel chambered in? It is chambered in .308 Winchester.

Is the barrel threaded? Yes, it is threaded for muzzle devices or a suppressor mount.

What twist rate does it use? It uses a 1:10 twist, which stabilizes a wide range of .308 bullet weights.

Buy the Faxon Match Series AR10 Barrel .308 Win 20-inch

Order this Faxon AR10 barrel from our Lubbock, Texas gun shop for fast, direct shipping, and browse more AR10 barrels to complete your build.