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.
➡️ Shop 338 ARC Barrels Now »