re: #124 EPR-radar

That last possibility has probably been ruled out. “keep and bear arms” in the second would seem to explicitly protect both ownership and use.

At least in as much as such use doesn’t blatantly conflict with public safety, for hunting, plinking on large swaths of private property and official firing ranges.

re: #128 Glenn Beck’s Grand Unifying Theory of Obdicut

As far as I know, legislation about actually using a weapon has been pretty much universally upheld.

Heller specifies self-defense as a protected use however:

3. The handgun ban and the trigger-lock requirement (as applied to self-defense) violate the Second Amendment . The District’s total ban on handgun possession in the home amounts to a prohibition on an entire class of “arms” that Americans overwhelmingly choose for the lawful purpose of self-defense.

I know it’s a 5 to 4 decision by the usual suspects, but it is current binding precedent and none of that majority has left the court.