Many Rifles were being rebuilt, Specially Vietnam period rifles. Usually the barrels were replaced. Some samples of markings identified on replacment barrels consist of: The barrel is usually a 1970's or 1980's, because that's if the C FSB was applied. The aluminum barrel block markings are typical for just a https://caideneghus.thenerdsblog.com/36871336/the-smart-trick-of-colt-combat-elite-commander-45-acp-that-nobody-is-discussing