Hopefully someone can help me out. I used to go up to Golden Age Arms company before they closed. They had a rifle on the wall up there that had a barrel that was not browned or blued. It was a smooth finish (not like a new green mountain barrel) but it wasn't bright or shiny and looked slightly aged. I asked the guy helping one day how it was made and he said that I would have to ask the maker. I never did get a chance to ask before they closed. Can anyone help tell me how a finish like this could be done on a new barrel. Thanks in advance.