That does not explain the English markings ? The semi-automatic marking is also puzzling !Its actually the English alphabet and yes, they mark the guns according to the base rifle they are copying.
Chinese markings on Chinese copies, Russian markings on Russian copies and so on and so forth.
The higher grade "forgeries" typically copy markings very closely. I read that most of the fighters actually hate the Khyber guns and avoid them at all costs- which is why they go to such lengths to copy the guns.Why does it say semi automatic on the receiver?