One incident does not an epidemic make. The truth of the matter is that what they did in Australia has worked. They haven't had a mass shooting since.
"In 2012, the Guardian published new statistics drawn from the United Nations Office on Drugs and Crime and Small Arms Survey showing only "30 homicides by firearm" annually in Australia, or "0.14 per 100,000 population."
"The U.S. statistics are bloated by comparison. Over the same period, Americans suffered "9,146 homicides by firearm," at a rate of 2.97 for every 100,000 people. Sixty percent of murders in the U.S. are committed with a gun, according to the Guardian, compared to 11.5% in Australia."
http://mic.com/articles/123049/19-ye...d-in-australia