smalls
Member
In your case mac would strip the park off, aluminum oxide blast the rust off of it. Then re-park and gunkote it.
I currently have no rust. It just starts to after extended carrying or range days. I guess my acidic sweat mixed with the thin finish in some areas can be a problem.
I was under the impression that I was going to strip off the park and then apply the new finish, but I guess it makes sense that I would apply it over the park.