For what is worth and bareing in mind that I am not a US national or resident (tried hard but another story) I would like to remind everyone of the UK example of a less than united front to gun control policy will do.
In the UK at the time we had of course our NRA but a great number of other associations all putting forward their own agendas, pistol and clay shooters etc. The net result was the goverment and anti gun interests where able to control the media and win over the general voting public, stating that society in general would be a safer, and better place to live if the legally owned gun where removed. They won the arguement, sadly, and of course the UK is still as crime ridden without them. The danger to legally owned firearms is the voting public, once you convince them that all guns and gunowners are a potential danger to society as a whole they will legislate against you, and then you are on a sticky wicket because the power of the law is on their side. Any blatent resistance to gun laws then would add fuel to their arguement.
From an outsiders point of view I think the NRA over there are doing a sterling job. I wish our shooting community and NRA had been made of the same stuff, we might still be shooting pistols at Bisley, still to late for the UK shooters. Support the NRA, good luck!