It's a silly question, I don't need to debate on the terms established by people with little knowledge of firearms in the first place, and by people who are so scared that they're willing to sacrifice their rights.
I asked him why does it need to be enough? The 2nd Amendment doesn't say, "the right of the people to keep and bear [small firearms so restricted in capacity and features as to hardly be modern], shall not be infringed." It says the right of the people to keep and bear arms shall not be infringed.
Yes I do believe in the spirit of it, and I support global demilitarization. If global demilitarization is on the table then I have no issue with across-the-board gun control.
Tanks, rockets, and everything else are not really designed for use by a single individual, nor are they used in practice in that fashion. Furthermore, they are so expensive that it would preclude most people from availing themselves of that hypothetical right, so it would be something only the rich could exercise.
But this is a bullshyt way for you to sidetrack the conversation. No one is talking about tanks, rockets, whatever else. We're talking about firearms, things that are constitutionally protected, and designed and practical for individuals.