I've had a Mossberg 16 guage bolt action for years. It's been at my parents house for years and I recently picked it up from there. When I picked it up I noticed a good deal of surface rust on the barrel. I've re-done several stocks in the past and they've all come out great. Wood work, however, is a good deal different for me than re-bluing a shotgun barrel. There's no rust inside the barrel or chamber so I don't have to worry about that but I need to re-do the out side. What's the best way to go about it? I know that there are kits that you can buy but am not sure which one to get. Any help here would be appreciated.