No clue about constitutional history huh?

There's a reason the framers left the generic terms 'arms' in place, instead of getting specific. 

They knew they couldn't predict the future, but they wanted the populace to be as well 'armed' as the government. That was the only way they could see that a tyranny of the majority could be avoided. 

What would really shock them is that people in 2016 were afraid to stand up and defend themselves, from enemies both without and within. 

That they would cower until the police showed up would seem absurd to these men.