I have a Nato en-route from the USA for use on my Voyager. The rings are polished and if it bugs me that they don't match the case finish I'll probably have a crack at refinishing the rings/buckle. I don't expect a close match, getting rid of the shine should be enough. Can anyone recommend what I should use to do this? I've plenty of old Natos that I use for lashing tripods to camera bags to practice on.