I have read a few articles about Ferlach and engraving schools in Italy who have had students/graduates from Indonesia, Korea, Japan, etc. So yes...I'm sure they are out there. I imagine there are more than a few "schooled" gunmakers residing in countries like the Philipines, Korea, Taiwan, Indonesia, etc. All of these countries have gun making industries. Not sure about double guns, but they are all capable of making extremely high quality weapons.