Interpreting the Second Amendment in a sane way might be a start. Its wording seems clear to me: it establishes the need for a well-regulated militia as necessary to the security of the state, and grants the right to bear arms
in that context. No aspect of the current situation is "well-regulated", nor are citizens, apart from a tiny number of fringe groups, organized into militias, and those that are could scarcely be called well-regulated.
However, the current intpretation seems to be solely in terms of the end of that sentence, "the right of the people to keep and bear Arms, shall not be infringed", with no context at all, and I think in a way that has a quite different meaning to what was intended.
And yet, when you come down to it, the right of the people to bear arms is not absolute and is "infringed" all the time in that sense; you don't allow automatic weapons to be used without special licenses, you don't allow small children to buy guns, you don't allow felons to own them. So it seems that the right to bear arms is not totally unrestricted; it's just a matter of where you draw the line, and I think the first part of the 2A is clear about the context in which that line was meant to be drawn.
I don't have any issue with an armed citizenry for national defense. Look at the Swiss; they are legally required to be armed, but in a highly regulated fashion, exactly so they have a citizen army ready to roll at any time.
This seems to me to be what the founders had in mind, not a free-for-all in which guns are available to all in an uncontrolled way.