And they are totally wrong because there were all sorts of machine guns and powerful cannons available in those days, even some used in the Revolutionary war.

Projectile weapons have been improving throughout history, it’s silly to assume the Founders weren’t well aware of that. I mean, there were medieval weapons that were pretty devastating by even today’s standards and the first amendment makes no mention of that. These were enlightenment thinkers well versed in the history of governments and technological progress.

The 2nd amendment is a principle meant to transcend all time and cultures. The people have a fundamental right to defend their rights.