That one line is all that the courts will ever use from Heller.
"[l]ike most rights, the Second Amendment is not unlimited. It is not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose."
That's the only part the courts will focus on. Nothing else said in it will matter. They will keep chipping away at which weapons and and for what purpose thay are permitted. Mark my word.
When everybody was celebrating Heller, I was urging caution, telling everyone that we did not win anything significant. Future courts could limit our 'right' to be exercised only in the home as everywhere else will be deemed off-limits and anything other than handguns too dangerous.
While Lucas is a lib, remember the words of Yoda admonishing Obi-Wan when Obi-Wan called their battle against the droids a 'victory'?
Yoda said: "Victory, you say? Master Obi-Wan.....not victory. The shroud of the Dark Side has fallen. Begun the Clone War has."
So it is with the Second Amendment. We won a single battle by a 5-4 vote. The war could easily be lost.
The best advice I ever heard and which I pass on now is,
get the best semi-auto military pattern rifle you can afford (AR-15, FN-FAL, Springfield M1A, etc.), learn to *shoot* it and stock up on enough ammo.
Barring that, a good lever-action rifle, and/or a scoped bolt-action rifle.
Keep “Imperial entanglements” to a minimum.