Logically, an unlimited right would entail an unlimited responsibility since rights are always connected to responsibilities. I am satisfied that the second amendment does not allow me to buy a tactical nuke or a battle ship or some other weapon of mass destruction. I do think I should be able to be as well armed as the typical infantryman but Im ahead of the courts on that one.
Since there is a clause on Letters of Marque, the Constitution assumes private citizens and companies would own war ships.
I only assume WMDs, Nuclear, Chemical and Biological, are not covered. Local Militias owned their own cannon and mortars.