My ex-son in law has a post 64 M94 that had the bluing on the receiver go bad. He polished the reeiver down to bare metal and cave it some kind of clear coating that was not shiny. Make a pretty nice looking gun. I do have an M94 made on or about 1981 (when I bought it NIB) that is a servicable rifle but is a bit loose and rattely. Shoots OK and is good enough to be a truck gun. Shoots cast bullets just fine. If the receiver ever gets ratty looking, so be it. After all, truck guns ain't supposed to look purty.