Be careful for what you ask. Just because you have an Article V convention doesn’t mean that you get what you want. If conducted at the wrong time, instead of getting a better explained 2nd Amendment you might end up with no “right to bear arms.”
You think three-fourths (38) of the States would ratify a repeal of the Second Amendment? I don't you could get 38 ratifications for any attempt to repeal or otherwise diminish any part of the Bill of Rights.