And I do not believe that had the founding fathers known, of/about them would they have condoned this weapon in a private home setting.
You do know that, at the time of the founding, one could keep ships and artillery if he had the money, right? Cannons can be pretty nasty things.
The Founders didn't anticipate the internet, either. Yet, we accept that online communication is covered by the 1st Amendment. The Bill of Rights was never meant to be limited to contemporary means or tools.