Well, that was interesting. I just spent the whole afternoon watching Aquabats on youtube with my 9yo daughter, while carefully and patiently scraping Duracoat from every square millimeter of this old gun. I was hoping that the bluing underneath could be saved, so I didn't want to use harsh chemicals if I didn't have to.
What I used instead was several pieces of scrap brass in various shapes, just junk cases from my scrap bucket. I sharpened it with a file and scraped, and scraped. It came off fairly easy, but took a long time to scrape from every nook and cranny. I then polished it with oil and 000 steel wool.
What I found underneath was quite a surprise. This was a beautiful 28-2 from the early 1970s, in maybe 95% condition? Why in the world would someone coat it? Crazy. I'm amazed (and pleased) that the original bluing survived and looks so nice. I'm pretty happy with my $450 gun. :)
Attachment 293049