First of all, there are some limitations to the reasonable right to bear arms. First being the term "arms" does not cover weapons of mass destruction. The term most definitely applies to personally transported and deployed weaponry. In medieval documents, catapults were never refered to as arms insofar as I have seen. On that thought, a howitzer is simply not something that should be entrusted to any one individual without some sort of community accountability. If this means licenses for howitzers, then so be it. Some things, like hand grenades, become a bit trickier. Having 1000 grenades in your basement is very dangerous. It is one of those things where even if there was no conscious misuse, the accidental misuse could result in catastrophic disaster. If civilians are allowed to own hand grenades, I have no problem with registration for the sole purpose of limiting the number owned. Rifles, machineguns, small cannon(20mm, etc) are all quite reasonable for lawful owners. I know people who would be quite responsible with such weaponry, and the storage of bullets is much safer than the storage of grenades. Criminals would be scared out of their minds if they had to face a homeowner with a MG-42, or a PKM, etc.
Arms does give us certain clear ownership rights and we must not let them be usurped. Destructive devices are a whole different level of classifications. The vast majority of DDs cannot be practically employed by the average US citizen, and far more importantly, few people would know how to, or be able to, properly store the majority of destructive devices. It is my belief that if communities want to organize their own militias, then these organizations may purchase destructive devices that will belong to the militia. This would keep more of the spirit of the RKBA close to the owner's home, yet would keep responsibility for the greater weapons of destruction in the hands of a group with must act via consensous.
In short, anyone here that thinks they have any right to own a tactical nuke need to get their heads out of their tailends and wake up. You have a right to own arms. Nuclear weapons go so far beyond arms in needs for maintainence, and destructive power they can't even remotely be classified as such.
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I twist the facts until they tell the truth. -Some intellectual sadist
The Bill of Rights is a document of brilliance, a document of wisdom, and it is the ultimate law, spoken or not, for the very concept of a society that holds liberty above the desire for ever greater power. -Me