The Faxon Firearms Match 6mm ARC 20-Inch Heavy Fluted Barrel (brand part no. 15BARC75R20FHQ-5R-NP3) is a precision AR-15 barrel built for long-range 6mm ARC shooters who want factory match accuracy without a custom build. Faxon machines it from 416R stainless steel and cuts 5R hybrid rifling with a 1:7.5 twist, a pairing tuned for today’s heavier 6mm ARC match bullets. The heavy fluted contour sheds weight while keeping the rigidity that steadies barrel harmonics, and the salt bath nitride finish adds corrosion and wear resistance without a coating that can flake. Among rifle barrels, this Match Series 20-inch length favors long-range precision rifle and PRS-style shooters running 6mm ARC uppers who want the most out of the cartridge.

Key Specifications

• The chambering is 6mm ARC.
• The barrel length is 20 inches.
• The twist rate is 1:7.5, correct for stabilizing heavier 6mm ARC match bullets.
• The profile is a Heavy Fluted contour that trims weight while retaining rigidity.
• The material is 416R stainless steel.
• The rifling is 5R hybrid rifling for improved bullet stability.
• The gas system length is rifle-length.
• The finish is salt bath nitride for corrosion and wear resistance.
• The muzzle threads are 5/8×24.
• The gas block journal diameter is .750 inch.

Frequently Asked Questions

What gas system does this barrel use? A rifle-length gas system, matched to the 20-inch length for reliable cycling with mid-to-heavy 6mm ARC loads.

Why does it use a 1:7.5 twist? That rate stabilizes the heavier 100-110gr 6mm ARC match bullets that slower twist rates can’t spin fast enough to keep accurate.

Does this fit a standard AR-15 upper? Yes, it uses a standard AR-15 barrel extension and drops into any 6mm ARC-chambered AR-15 upper receiver.

Buy the Faxon Firearms Match 6mm ARC 20-Inch Heavy Fluted Barrel

A 416R stainless barrel cut with 5R rifling and the right twist for heavy 6mm ARC match bullets is exactly what this Faxon delivers. Order it from our Lubbock, Texas gun shop and it ships fast to your door.