The only way the "Second Amendment Issue" is going to be permanently settled in this country is through a "Fort Sumter scenario" (followed by "the events" that came after Ft. Sumter).
The left will fight and will KEEP fighting and NEVER retreat on this, will keep pushing incrementally and relentlessly "forward". Remember that it's they who control the education/indoctrination system, and who will shape the minds of the young. And slowly, but steadily, they are "turning" the minds of the young regarding guns.
Eventually, it will boil down to a "come and take them" situation or series of incidents that grow and cascade throughout the entire land. Randy Weaver writ a hundred or a thousand times larger.
And then it will be up to the Second Amendment folks, with their oft-repeated mantras of "Molon Labe" and "Don't Tread on Me" to either put up or shut up.
Because, failing this, the left WILL "shut them up" -- and disarm them once and for all.
Once again, I refer you this (subtitle of a book):
"What will you do when they come to take your guns?"
http://tinyurl.com/qybh9pg