I saw a report on this on a tv newsmagazine way back in the mid ’90′s. As I recall, some of the fabricators were much more sophisticated than this, turning out high quality repro’s rather than one-offs. I suspect the Pakistani guvmint has had a hand in cracking down on them. This is a country that has tooling engineering sophisticated enough to fabricate nuke cores.
a good ten-twelve years back there was a show on one of the villages doing this. They even followed one guy making a Mauser Broomhandle from beginning to end: milling the frame, the upper, everything, and then test-firing it.