The "Faxon Rimfire" line is made in-house from raw bar stock, and undergo the same rigorous testing and quality control measures that have made Faxon AR and pistol barrels a market favorite. These barrels are made from 416-R stainless steel, given 6 Groove Rifling at a 1:16 twist, and a Recessed Target Crown. Barrels are Magnetic Particle Inspected, and are finished in either Salt Bath Nitride or PVD.Faxon Rimfire barrels offer weight-savings to typical factory barrels for 10/22.Standard Factory Barrel: 1.78 lbsFaxon Rimfire Pencil Barrels: 1.0 lbsFaxon Rimfire Fluted Barrels: 1.4 lbs