Personally, I think there is a market for them. I thought I had a KP Martini but it was pointed out to me that the Martini was actually built by a government arsenal in Afghanistan, then "modified".
The craftsmanship in some of those KP firearms is incredible. My hat is off to them. Some, are junk, plain and simple, some are works of art. Some are also indicative of the skills that have been passed on from one generation to the next, with little or no formal education.
I can understand the skepticism, indicated by many here but to tell the truth, I don't know if it's really warranted. Of course, some of these firearms aren't safe and a prudent person, wouldn't take a chance on them, seeing as there are so many decent, legitimate, specimens available at reasonable prices. That being said, they are turning out thousands of these firearms. If, they were blowing up and killing people, on a regular basis, they would soon be out of business. Not only that, they still believe in the blood feud over there. If a shop and its craftsmen, were turning out firearms that were killing or maiming the user, he would pay the ultimate litigation fee, in blood.
Give credit where it's due. Those firearms, may be questionable and may or may not follow specs. They are unique and in many ways, should be an inspiration to us all.

I can still remember the aritcle in an old magazine, about a vet bringback from Viet Nam. The fellow had two. One was a US made Thompson SMG, from whenever and a hand made 45acp pistol that readily accepted USGI magazines. It was hand filed, brazed and drilled etc. Not a work of art and seeing as the bbl was home made as well, without rifleing, not accurate. It was a status symbol for the maker and it went bang. It was a fine piece of memorabilia. I've always wondered what happened to that pistol.