Not that I think it was about anything but Militias, but let's pretend we are in National Rampage Association crazy land...
This is a Revolutionary War Era Musket. It could fire 2-3 rounds a minute in the hands of a trained infantryman. Accurate to only about 100 yards.
One of the main reasons the colonists were able to win the Revolutionary War was because many of them carried Kentucky long rifles... which, at the time, represented the latest technology in small-arms weaponry... these rifles were a vast improvement over the standard-issue muskets in terms of accuracy... a skilled marksman with a Kentucky long rifle could pick off a British officer at 200 yards with ease... sometimes even as far as 300-400 yards... all of which caused great consternation among the Brits as they attempted to reign in the colonists by force of arms...
the Framers recognized that an armed citizenry, having access to the latest small-arms technology, was vital to making sure that the guarantees granted by the Constitution and the Bill of Rights would be able to survive any future threat of tyranny, whether foreign or home-grown...
This is a AR-15 Bushmaster.
It can fire 45 Rounds per minute, and has a maximum effective range of 450 meters.
If the Framers of the Constitution were able to somehow materialize before us, they would be of the opinion that each and every sane and law-abiding American man and woman should have one of these...