thats sad cause I still couldnt figure out who made this. Letter from a gunsmith and copy of his license would be enough, otherwise the gun will be lost. it would be fun to shoot it. full auto handguns are legal in Georgia (south caucasus, NOT a US state) and do not require additional paperwork or something like ths. I am 99% sure this gun is from western Europe. it was registered here but after the owner decided to sell it police refused only because there is no proof that alteration was made by a certified gunsmith. otherwise no problem
sad because the owner will have to voluntarely hand over this interesting piece and it will end up in storage facility.