People make this mistake a lot (anti-gun people make it, too). The point was never that the American people would be able to repel an oppressive force using on

People make this mistake a lot (anti-gun people make it, too). The point was never that the American people would be able to repel an oppressive force using only their personal weaponry. That was ludicrous even back in the 1700's. The key point is that, when the rebels inevitably capture weaponry or receive foreign assistance in that form, they would be generally familiar with its use. They would have skills like marksmanship, trigger discipline, and maintenance. They might need to learn the specifics, but these skills largely transfer. Edit: Now, I don't think banning breech-loaded firearms makes sense, but that is for reasons unrelated to the original purpose of the second amendment.