Boy this thread ran afoul quickly from what oldandslow was asking. Not that difficult of a question to answer really, but alas this is CP and always full of the interwebs drama.
In my humble view of the definition, arms= firearms. The items you listed- tank, bazooka, tomahawk missle, or nuke, don't fall into that category. Once again, in my view of the definition of "arms". FWIW