How fast?
<You're correct, the times are different. First, regarding external threats to the country. An armed citizenry is not necessary or helpful. If it ever came to that, there are a lot of old weapons which would be distributed, and the Bill of Rights would be irrelevant. Those would be desperate times.
How fast will the weapons get to the people? No waiting or back checking? During such a crisis our military will be giving weapons away? An armed citizenry is not necessary or helpful. If it ever came to that,
That's one of the reasons Amendment II was written the way it was.... pertaining to weapons for the people and for the military.
Marcia