I understand this was a horrible tragedy and people want to see something done to prevent this. But if you are serious about wanting to save lives via prevention why not concentrate on where you could be of the best help. More people died from prescrition drugs in 2011 than they did in motor vehicle accidents. That is something where we could really use some rethinking!
Deaths in US 2011
(more died from prescription drugs than illegal drugs)
So why concentrate of firearms? Death by firearms don't even make it in the top 10 list of causes of death. I think we could do more good with working on that drug issue first!