Pointing out that the Constitution envisioned private ownership of cannon-armed warships (privateers) may shut a few up. OK, you get on one side of the field with your AK, and I'll get on the other side with a few muzzle-loaded cannon loaded with grapeshot, and we'll see who has more firepower
I don't think the left will admit that the Constitution intended for private people to have any sort of weapons. They will stick to the collective-rights argument forever. I can't believe they have managed to maintain their own self-delusion for so long. Sometimes I wonder if they really believe their arguments or are they simply scared to admit the obvious?