Nothing.
It has to do with my God given inalienable right to bear "ARMS" which the government cannot infringe on.
So....will the GOP defend my right to have grenades in my truck? If so, they may get my vote back. If they'll just come out and run on what they mean. RPG. Grenade. Claymore mine.
How I defend my home, and with what arms, are NOT the government's business. Run on it. You'll get my vote back.
I think most people are fine with making things like Grenades/RPG/fully automatic weapons illegal for the general population. Not sure why you keep bringing this up. The conversation President Obama started was banning a type of semi-automatic RIFLE, which (to me at least) is totally unnecessary.
Rifles -
as a whole group - account for maybe 300 homicides/year. AR-15's? Maybe 15 people/year. In a country of 300 MILLION people that is an extremely, extremely small number. The man is playing political games and you're falling for it hook, line and sinker.
You want to make an impact on gun violence? Start figuring out ways to help educate youngsters in the inner cities and make sure they complete high school and go to college. Now that is something I can stand behind.
Quit wasting your time dude on this AR-15 thing. It's a political talking point designed to get folks exactly like yourself all wound up. Don't be a dupe.