First of all, nobody knows the real number, but I haven't heard anything credible that says it's over 11 million. On top of that, 70% of those favoring gun control means roughly 7.5 million more Americans in favor, however the Consitution doens't change with a popular vote. So out of the 250 million voting age Americans, 7.5 million more supporters of gun control doesn't immediatly get the 2nd ammendment changed. On top of that, those 7.5 million are spread out over only 5 or 6 main states. I don't think Alaska is going to be too worried about the influx of Hispanic voters.
So, while not helpful, this doesn't amount to anything concrete that I would worry about at all.
PS. When we sound the alarm every 5 minutes, people tend to start tuning us out.
Free market capitalism isn't right for America because it works better. It's right because it's free (and it works better).