Each state has the right to arm its own militia. Used to be a State's militiamen had to bring their own firearms. Not true today (or for a very long time).
Ultimately, we have only those rights we are prepared to defend. Constitutional or otherwise.
bcnu, Mikem
It would seem, therefore, that the three human impulses embodied in religion are fear, conceit, and hatred. The purpose of religion, one might say, is to give an air of respectibility to these passions. -- Bertrand Russell