Faxon 22 inch Heavy Fluted AR-15 barrel chambered in 224 Valkyrie. Features a 1:6.5 twist, 5R rifling, and a nitride finish. Constructed from either 4150 Mil-Spec steel or 416R stainless steel, then finished in Nitride. Match Series quality with precision headspace checked using custom gauges. Manufactured in-house from gun-barrel-quality bar-stock for consistent performance.