Matt Hoover-another example of a guy that kept poking the bear: Should he have been charged and then convicted? No and no but it proves that if the gov't decides to go after you. You are done.
YouTuber sentenced to prison for advertising unregistered machine gun devices
A YouTuber with over 180,000 subscribers will spend the next five years behind bars for advertising an "auto key card" which can be used to turn a semi-automatic rifle into a machine gun, feds say
lawandcrime.com