Just changing the wording in their State Constitution would be able to over-ride a protection for an Individual Right. Else some Southern States would still have slavery laws on the books.
Thanks for continuing to prove you haven't read the decision and prefer gun control to Individual Rights.
Thomas Jefferson was against a Constitution that did not contain a bill of rights to protect the people not against themselves, but from the federal government: "I hope, therefore, a bill of rights will be formed to guard the people against the federal government as they are already guarded against their State governments, in most instances." --Thomas Jefferson to James Madison, 1788. ME 7:98
Because a mind is a terrible thing to waste without facts, see here:
http://federalistblog.us/2007/03/dc_circuits_2nd_amendment_holding_too_weak_to_survive.html