Numerous rifles were rebuilt, Specially Vietnam era rifles. Usually the barrels ended up changed. Some samples of markings identified on replacment barrels contain: Unfortunately, I am on vacation so I can not put up pictures of your bolt. It truly is MPC engraved. The only marking about the carrier could https://jaidenuwktc.actoblog.com/31870333/facts-about-colt-combat-unit-rail-gun-45-revealed