so i know every gun has a serial number but what is it used for. can you find out who ownes a gun if you have the serial number. im wanting to buy a gun from a friend of a friend and i dont know if you have to do anything paperwork wise to do this and to make sure the gun wasnt stolen or anything. also if i have to transfer the gun to my name. oh i live in NM if that helps. and do i have to register the gun or obtain a permit for it in nm. thanks