Faxon Match Series 6mm ARC 20″ Target 5R Nitride Barrel

Description

The 6mm ARC earned its reputation by punching well above its weight at distance, and this 20" Faxon Match Series barrel is built to let it stretch its legs. It starts with 416R stainless steel, runs a 1:7.5 twist, and gets 5R rifling, which is the hybrid land-and-groove design that reduces bullet jacket deformation on the way out. The result is a smoother bore that tends to hold velocity, foul less, and clean up quicker than traditional cut rifling. Top it off with a rifle-length gas system for a soft, consistent recoil impulse and you've got a barrel that stacks rounds on paper.

What the Match Series Target Barrel Brings to a Build

Faxon machines these barrels cradle-to-grave in their Cincinnati facility, and the quality control shows. Each one is stress relieved, air-gauge inspected for bore uniformity, and 100% magnetic particle inspected to catch any flaws in the steel. The 11-degree recessed target crown protects the rifling at the muzzle and helps bullets exit clean and consistent, which is exactly the kind of detail that matters when you're chasing small groups.

Why the Nitride Finish and Target Profile Work Together

Inside and out, the barrel wears a salt bath nitride treatment that locks in the bore, boosts corrosion resistance, and adds to barrel life. The Target profile carries a bit more mass out front, which soaks up heat during longer strings and keeps things stable shot to shot. That extra weight steadies the rifle for slow-fire precision, prone work, and hunting setups where a first-round hit is the whole ballgame.

Fitment and Finishing Touches on the 20" 6mm ARC Barrel

This drops into any standard AR-15 upper and headspaces with a 6mm ARC bolt. The muzzle is threaded 5/8×24, so your favorite brake, comp, or suppressor mount threads right on. The M4 barrel extension is coated in Nickel Teflon for slick bolt engagement and a tight receiver fit, which is one more small edge toward repeatable accuracy on a long-range build.