Hello, I'm new here so I hope I'm posting this in the right place. I stumbled across my old Mossberg 472 SBA in my garage I had bought used back in the early 80's. It has a little rust on it and I would like to restore it but, I'm unsure of the finish on the metal and don't want to use the wrong process to restore it. I researched online but could not find any info. Thanks in advance.