I carried a Paki hack job 7.62 "Krinkov" built off a Yugo RPK reciever for 2 months it worked fine had to get rid of a bad hacked up FCG it worked fine. Some of the work that came out of the Peshwahar valley that I saw and tested worked very well indeed. Some of it was total crap, some of it good enough to fool experts right down to the stamps. I saw a 5.45 krinkov that is now sitting in a museum somewhere, that is thought to be an original but is a very good fake. It has a Russian barrel trunion, a cut down 74 barrel a completely redone reciever (I want to say it was a Bulgarian that was polished and restamped w/russian markings). I took about 15 minutes of looking at it to determine it a complete fake.
Remember some of the best mathematicians come from Pakistan and India. I would call those peole anything but a 1/2 wit. They just aren't as "advanced" as us and don't have everything we have available.