Except that gun confiscation would necessitate the budget to buy the firearms back. I think that would be unlikely to occur that quickly.
The government doesn’t compensate the poor slobs that get hit with domestic abuse charge and their guns taken away.There is no certainty you wouldn’t simply be told “guns are illegal,you must turn them in or the authorities will come put you in prison”;don’t believe for a minute there aren’t huge illegal databases in the hands of rogue government and Brady-type persons that would be used to identify a majority of gun owners.Remember the roving inspections with photcopiers of the FFL dealers,4473s,CCW lists at the state level.If the data is on a networked computer ,given time and money ,that data can be retrieved by hackers.Faced with federal(Congression blackmail) orders to give up all firearms data or face cutoff of federal moneys,how many states would fight?