Should I be able to have an RPG and hand grenades in my truck?
Yes or no.
Its really that simple.
In your trunk? Why not?...OK just kidding.
As with any right, we recognize rights are not absolute. For example the 'fire in a crowded movie theater' when no fire exists. Yes, that is free speech but it is outrageous to the public.
Government has the duty and by Constitutional word, the authority to 'promote the general welfare'...That in and of itself the ability to regulate.
The real test of these stupid remarks is the following:
Would a Jury of your peers unanimously convict you for "Yelling 'fire' in a theater" or defend your "right to free speech?" Obviously, the Jury would convict you, because that does not fall under free speech, and the People, via the Jury, have decided that.
The same thing applies to hand grenades. If someone was being tried for driving with explosives on the highway, would a Jury acquit them under the 2nd Amendment? Or would the Jury convict him, because the 2nd Amendment doesn't apply to such a scenario (and thus the law is constitutional). You can bet your ass the Jury would convict in this scenario as well.
As Thomas Jefferson said:
"I consider trial by jury as the only anchor ever yet imagined by
man, by which a government can be held to the principles of its
constitution." --Thomas Jefferson to Thomas Paine, 1789.
"It is left... to the juries, if they think the permanent judges
are under any bias whatever in any cause, to take on themselves
to judge the law as well as the fact. They never exercise this
power but when they suspect partiality in the judges; and by the
exercise of this power they have been the firmest bulwarks of
English liberty." --Thomas Jefferson to Abbe Arnond, 1789.
"If the question [before justices of the peace] relate to any point
of public liberty, or if it be one of those in which the judges may
be suspected of bias, the jury undertake to decide both law and
fact." --Thomas Jefferson: Notes on Virginia, 1782.