For anyone uniformed, khyber pass is a region of Pakistan that is famous for its gunsmiths. Not necessarily for their quality but for the fact that these gunsmiths basically hand build thousands of guns out of low quality scrap metal using fire pits and hand tools.

Most of them have no formal education, and no training in how modern firearms work, instead relying on copying what physical examples they can get their hands on, and doing guess work based on pictures. Some of them actually do extremely impressive work, both functionally and cosmetically, while others will make crazy abomination guns that look like they described a gun to a child, had the child draw a picture based on the description, and then built an exact copy of the picture to scale.