[Robert357]

Once a firearm reaches a certain calibre, it no longer falls into the arms definition, but then becomes ordnance. A cannon falls into this latter definition. The same is true for items like RPGs, bombs, nuclear weapons, etc.

You actually might want to check out post 177 and the link to the definition of a destructive device. I suspect that the legal term you are searching for is not ordinance, but destructive device.

[El Gato]

You actually might want to check out post 177 and the link to the definition of a destructive device. I suspect that the legal term you are searching for is not ordinance, but destructive device.

While I was only responding to the language you quote, I'll make the comment that a mere statute or regulation cannot redefine a term in the Constitution. The terms mean what they meant when the Constitution was ratified or amended. Sometimes we have to look to slightly later writings to divine the meaning, but the meaning that matters is the one understood at the time.