Originally Posted by CarryTexas
They would put out the word that you turn them in by x or face 20 years in federal "pound you in the arse" prison. Most would turn them in.
The ones that didn't would either hide them to where they were essentially useless or would get caught sooner or later.
However, I doubt they would try confiscation. Making then non-transferable would do the trick, but would take longer.
Back around 1774, the British tried to do the same thing to Americans. It did not end well for them.