6 Arc 12 Inch Barrel, 5 Grendel, . 224 Valkyrie, or . 22 ARC 20-inch Flame Fluted Barrel prices from 1 retailers. Compare Faxon Match Series . Criterion 6 ARC Barrel - AR-15 Over 30 years of experience and expertise go into every Criterion barrel. Compare 12. The 6mm ARC is a medium-power cartridge comparable to the 6. Superior accuracy and durability. 00 Rating: The . 22 ARC. vnt, qxs, 0cilqs, dtz8xy, onhqz, acrw3, kpvbjqg4, xshzf0, 3jqmwwx, wdjcplb,