Warning - opinion ahead...
Notwithstandng amateur and expert interpretations of the 2nd, the DC v Heller decision ruled that the right to keep and bear does apply to indivduals and it is the current reigning precedent. However, this does not mean that it is forever - witness Roe v Wade.
The simple, single solution of banning guns in the US is a pipe dream and those who clamor for that and nothing else are not serious and are just wasting energy.
Any anti-gun effort that is truly serious must, as it's first point, call for a constitutional convention for the purpose of repealing or modifying the 2nd amendment. It should also move forward with a continuous barrage of legal challenges aimed at overturrning Heller. Again, see Roe v Wade.
As far as legislation goes, which could contribute to the barrage of court cases, the anti-gun crowd must understand and accept the reality of the current situation. You have to propose something that is going to get 60 votes in the Senate. One way is to change the Senate - that's why we have elections. To continue to propose ridiculous things that are not going to get 60 votes just says they want the issue, not that they are serious about making changes.
I tire of false comparisons to Canada, Australia, etc. They don't have a constitutional right such as we do, so their governments can easily enact such sweeping actions.