I've noticed a small dot of rust developing on the rear sight of one of my 686's. It's just below the notch. I read the threads about using fine bronze/steel wool and various oils to remove rust on blued guns, but would this be the same procedure on a sight? I wasn't sure if I would end up rubbing the black off of it. I guess I can buy a new sight if I mess this one up, but I thought I'd check in here first.

Thanks for the help.