I think it is important to recognize that this wasn't so much a Trump win, as a Hillary LOSS.
Trump didn't win so he could give us back all the rights that have been stolen from us over the last few decades. He won because more people felt Hillary would be worse!
Big media and her other supporters and true believers are falling all over themselves trying to figure out where they went so wrong, and most are still failing to recognize the fact that it was BOTH the message AND the delivery system (Hillary) that people found wanting.
Apparently, all they can see at the moment is that people who went to college voted their way, and those who didn't voted for Trump. Overly simplistic and not strictly true, but those things have never bothered their world view before...
Re-opening the machine gun registry would be RIGHT, but its not going to happen, and as mentioned, just the attempt to return to pre 86 status would be spun into the NRA issuing machineguns to toddlers, or worse...
We risk losing more than we could gain. This country runs by the numbers, and there are simply too many people who don't care or actively oppose the right of people that they do not control, to be armed, at all, and machineguns, of course, are the worst...in their view.
Short of a complete total ban, machineguns are already as restricted as they can get, which is why the gun banners don't bother to go after them as "evil" going after guns ordinary working class people can still buy, instead.
There is hope for a better tomorrow, again, but we're a long way from getting back things we lost, still. It might be the biggest help Trump can give is simply NOT to "help" at all. Right now, its way to soon to know.
The other side will automatically, and virulently oppose ANYTHING that comes from Trump, because it comes from Trump. Not actively opposing gun rights and otherwise staying out of the issue (for now, at least) might be the best thing for us. We should not get too enthusiastic until we actually do make some positive gains. We have a SLIM chance to do that under Trump. Under Hillary, we would have no such chance.