Faxon Firearms 10B810R20NTMHL5RNP3: Faxon\'s Match Series of barrels takes the renowned performance and value up a notch. Manufactured in-house from gun-barrel-quality bar-stock, the Match Series starts with 416-R in 5rd rifling. After rigorous testing, the barrels are Nitride treated inside and out, locking in the bore, improving barrel life, and keeping the elements at bay. The extension is coated in a Nickel Teflon coating that maintains incredible dry lubricity, corrosion resistance, and with the coating, tightens up fit between the extension and receiver.