The other part of how the Australian model won't work here, is the rabid gun folks.  I'm not talking the run of the mill hunters or target shooters, but the guys who scream that the 2nd Amendment is about keeping the government in check.  Those folks honestly believe they can fight the government with their ARs.  Many of them are couch commandos, but many of them would actually try to fight it out if the 2nd Amendment was repealed.

Personally I don't want to see anything as drastic as the Australian model here, but I do think that we need to find a solution.  That solution isn't just more guns, I'm not sure what it looks like, but more guns isn't' the answer.