A better definition of "A well regulated militia" added to the BoR and not just the US code.
Strike everything that says "Citizens shall not." The purpose was to keep limit the Federal Government, not the citizens.
To play the devil's advocate here
The second amendment was written a very long time ago when flint lock rifles were the norm. Since then, arms technology has improved a great deal. A line has to be drawn somewhere. People are always going to complain about where the line is drawn.
Okay, I'll play. The lines drawn should be; The Federal Government may not have ANY weapon, Transport or technology that is not available to the Organized Militias of the several states. The Federal Government may NOT employ ANY weapon, technology, or transport that at least 66% of the several states employ. (cuts down on price gouging). I'm not sure how I'd feel about some states having nukes or F-22s, but, it's a right sight less frightening than only the Feds having them.
If you feel a line needs to be drawn, draw one. The odds of a collective group of well armed states standing up to the Federal Government are considerably higher than that of a group of well armed citizens. The Federal government shouldn't be allowed to employ any weapon that the state does not in use of it's own defense.
I would draw that line at "any weapon that is or can be issued as part of a personal issued weapon or weapon system of the organized militia, similar or comparable in size, nature, or outcome, may not be restricted for private use." "similar or comparable is define as equal to or lesser than, similar in design and outcome, comparable in design or outcome."
28th Amendment;
Henceforth it shall be illegal for any government to pass any law restricting or prohibiting any rights set forth in Amendments of The Constitution of the United States of America.