See what weapons were used in Mass Shootings.

http://www.washingtonpost.com/wp-srv/special/national/weapons-and-mass-shootings/?Post+generic=%3Ftid%3Dsm_twitter_washingtonpost

Interesting Graph of guns used and good information about the killers too.

America’s latest mass shooting took place just over a week ago when a 22-year-old college student with a history of mental illness killed three people with a knife in his apartment before going on a shooting spree through Santa Barbara, Calif. By the time he took his own life, six people were dead and 13 wounded.

The guns he used, a pair of Sig Sauer P226 handguns and a Glock 34 handgun, were registered to him and had been purchased from federally licensed gun dealers. Data collected by Mother Jones looking back at the weapons used in the last 30 years of mass shootings in the U.S. show that legal weapons are the norm.