I am going to refinish an old S&W 39-2 9mm and I need some suggestions on how to redo the frame. It is made of what looks like aluminum alloy. It looks like it has been carried in a leather hoster and the finish is gone off both sides if the frame. My question is can it be stripped down and repainted? If so what would be the best paint the use? Would DuraCoat work on Aluminum? Any help would be appreciated.