I don't think so. I have no legal training but I think there is a difference between a firearm and a nuclear weapon on grounds that the interpretation of the second amendment is at a personal/militia level rather than some kind of national threat that would warrant use of nuclear weapons.
No, since no one has ever put up the money to buy one and been turned down or sought access to an appropriate test range and been turned away. The common law is like that: it doesn't solve problems we don't have.
