When the Bill of Rights was written, the Founders were perfectly fine with private ownership of cannon and Naval warships.
muskets were the standard field issue of the day... the equivalent of todays M4
are they ok with the average citizen owning an M4 ?
of course, it doesn’t matter whether or not they’re ok with it... as it’s not up to them how a person defends themselves against whatever threat they encounter.
“...the Founders were perfectly fine with private ownership of cannon...”