I am a strong supporter of the 2nd Amendment,however, I am also a strong supporter on who should be able to own guns. People kill people, guns don't.
I believe the answer lies in who is eligible and responsible to own them.
First and foremost, people with mental health issues have no business with a firearm! There needs to be stronger background checks into a persons mental health history, and if there is none, then family and friends need to be interviewed to see if there has been any history of depression or other issues of mental health.
In every case of people going to public areas to kill people, there is some sort of warning sign others close to them noticed. Normal, balanced people don't even let the thought of "Hey I think today I will go to the mall and see how many people I can kill, and why I'm at it I will do the grand finale and shoot myself in the head! Case closed.
Yet those of us left behind are left to scratch our heads and ponder the how,why,what where. Let us not forget the what ifs!
People may say that with doing a background check that involves interviewing people close to them if there is no history of mental health that it is an invasion of privacy, however, in the case of gun control; I believe the ends justify the means.
When I worked in security in Los Angeles at ITT Gilfillan where they made radar for the Navy, I had to have a top secret clearance to work there. The Government or who ever did my background check were very in depth and went way back in my life. It should be the same for gun ownership.
We also need to address the failed system of taking care of the mentally ill. There are many cracks in that system to be sure.
Now for the case of assault type rifles and amour piercing bullets. Come on people wild game DO NOT wear bullet proof vests!!! There defiantly needs to be put in place regulation on this matter no question.
In conclusion, I am for the 2nd amendment. I believe we have a right to protect our homes, loved ones and Sportsmen to be able to hunt wild game. These things were put in place by our forefathers in the 2nd amendment.

A very interesting debate:

http://youtu.be/fSc4KtbhNb4