338 ARC

Important Product Note for Faxon Match Series 338 ARC AR15 Barrels:

Faxon Firearms strives to deliver high-quality products designed for optimal performance. Please note that some customers may need to adjust their upper receiver feed ramps to ensure proper function, particularly when using Hornady Sub-X ammunition. For best feeding reliability, Faxon recommends pairing this barrel with Duramag magazines designed for 400 Legend. Always ensure compatibility with your specific firearm setup and consult a qualified gunsmith if needed. Faxon Firearms is not liable for damage or performance issues resulting from improper installation or use.

Faxon .338 ARC Barrels – Maximum Energy in the AR-15 Platform

Faxon Firearms is leading the way in .338 ARC barrel development for the AR-15. Designed around Hornady’s .338 Advanced Rifle Cartridge, our 338 ARC barrels deliver superior energy on target, efficient case geometry, and high-mass projectile capability—all while maintaining full compatibility with the AR-15 platform.

Perfect for medium-range hunting, hog control, and tactical use, the .338 ARC was developed to deliver maximum terminal performance from a magazine-fed system. With optimized performance from shorter barrels and the ability to launch heavy-for-caliber bullets, Faxon’s 338 ARC barrels are the go-to choice for shooters who need power and precision in a compact package.

Built to Harness the Power of .338 ARC

Faxon .338 ARC barrels are built in-house and feature:

  • 416-R stainless steel Match Series construction for strength and accuracy
  • 5R Rifling nitride finish
  • Optimized Feed Ramps consistent feeding, even with heavy subsonic projectiles
  • Threaded 5/8x24 muzzle for suppressors and muzzle brakes
  • Available in 9", 11.5", 12.5", 14.5" and 16” lengths with pistol-length gas systems
  • Standard AR-15 compatibility using 6.5 Grendel-type bolts and mags

Match Series Advantage

Our Match Series 338 ARC barrels use premium 416-R stainless steel and are machined to exacting tolerances. Each barrel is magnetic particle inspected (MPI), stress relieved, and precision air-gauged to ensure top-tier performance for any use—from field to range.

Why Choose Faxon for 338 ARC?

Faxon Firearms was one of the first manufacturers to offer 338 ARC AR-15 barrels. Whether you're building a rifle for predator hunting, suppressed tactical work, or general-purpose shooting, Faxon delivers a barrel built for energy, reliability, and accuracy—without compromise.

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Build for impact. Shoot with confidence.
Browse our full selection of Faxon .338 ARC barrels and experience maximum energy from the AR-15 platform.

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