When the 1968 machine gun amnesty was announced in the US, it was treated with widespread suspicion among gun collectors. Some thought it would merely a pretense to find and arrest owners of unregistered machine guns. Others though it was just the first step in a prohibition and confiscation of machine guns. Both of these groups would prove to be wrong, however,r and the amnesty was in fact a true amnesty.
In fact, the amnesty was even more substantial than people recognize even today. It was not just an amnesty for possession of an unregistered machine gun, but also pretty much any crime associated with the gun. For example, it would legalize guns that had been stolen from military property rooms, and guns with defaced serial numbers. In fact, it even allowed felons to register machine guns, and retain the legal right to own them to this very day.