Quote Originally Posted by fjruple View Post
I believe there are ways to recover the original markings and serial number on the receiver even as scrubbed as that one.
I was watching a television documentary a month or two back concerning a Mafia killing during the Prohibition period (in Chicago I think?). Interestingly, the U.S. Police still had the Thompson SMGs which were used and the Police got them out for the documentary so that they could be filmed. The Police officer went on to explain that the serial number on at least one had been removed, presumably in the belief that it would make the weapon untraceable, but the Police had done some sort of procedure to "recover" the serial number from the weapon. He didn't get into details of how the serial number had been recovered, only that it had been removed but the Police had recovered it.