This is a new 20 inch round barrel Winchester 1906 Short, Long, Long Rifle. This barrel was made here in the US by 2 very talented gentlemen that specialize in Winchester restorations. This is not a cheap replacement barrel. This is factory quality made from 4140 gun barrel steel. The barrel follows the original Winchester 1906 specs with a .219 bore, .224 groove and a 1x16 twist all in 4140 steel. Dove tails are correctly located for sights are cut along with Magazine Hanger (magazine ring) cut outs. These barrels are ready to be installed and are very accurate!