Why should anyone turn in their guns?
I’m not about to obey illegal laws.
A state law in violation of the 2nd Amendment would be void ab initio: “to be treated as invalid from the outset”.
Recall that following the weak Articles of Confederation those signing the new Constitution refused to do so unless ten amendments were added—express reservations of powers to the people and the states—due to the strong powers it gave to a central government.
They were anticipating the 21st century Democratic party. And remember, this is the Peoples Republic of Illinois. Their commissars are just feeling frisky ...
Now, the day that the SCOTUS guts the 2nd would be the beginning of the end of our Republic, although a good argument can be made that it began about four years ago.