(Obviously you would need a constitutional amendment first)
Ban the sale of new guns to the public but allow secondhand sales. That cuts off the gun manufacturer money to the NRA; leave it a few years to bed in and the politics change. Then ban moving guns across state lines, and allow states, cities and counties to impose their own bans or permitting regimes. That would probably suffice.
Problem is, the vast bulk of the NRA's money comes from gun owners, since it's our group, the manufacturers' group is the Nation Shooting Sports Foundation (http://www.nssf.org/). The NRA's membership would at minimum double, and donations to them would rise exponentially; there was a hint of that after Sandy Hook.
I don't see how you and wisty deny that people on my side would turn our current cold civil war into a hot shooting war. We've read our 20th Century history, we know the potential end games for us and our families. We haven't been buying guns and ammo at historically unprecedented rates just to bury them.
Then again, you at least acknowledge a constitutional amendment would be required to do this legally, and that's not currently foreseeable. E.g. starting in 1986 with Florida, about the same number of states that would be required to pass an amendment enacted legal "shall issue" concealed carry regimes, which now cover 42 or so states, with the Federal courts only forcing Illinois and maybe California and Hawaii (that's still being litigated), see the first two country maps at: https://en.wikipedia.org/wiki/Concealed_carry_in_the_United_...
We've read our 20th Century history, we know the potential end games for us and our families
My favourite trolling suggestion for getting popular support for gun control would be to find a couple of extremely brave people to restart the Black Muslim Gun Owners organisation. It would reprint all the gun advocacy material that talks about defending against state violence but with "black" or "muslim" inserted at key points. It would require extremely brave organisers because the chances of getting jailed as terrorism suspects or having your HQ burnt down by racists would be extremely high.
It's harder to blast the NRA when you're actually talking about millions of law-abiding, rights-exercising citizens.
The big, bad, evil gun companies are a much easier target to lambast. Never mind the fact that many of those boogieman companies turn a profit by arming those same millions of citizens.
It's just another avenue for hoplophobes to attack something they don't like.
Ban the sale of new guns to the public but allow secondhand sales. That cuts off the gun manufacturer money to the NRA; leave it a few years to bed in and the politics change. Then ban moving guns across state lines, and allow states, cities and counties to impose their own bans or permitting regimes. That would probably suffice.