Maybe you should update this article to reflect factual reality? The near automatic fire achieved by the gunman was provided by a very much legal device called a slide fire, which makes bump firing an AR-15 almost effortless:https://www.youtube.com/watch?v=uCNwMxhqxwA and also more accurate than a true full auto: https://www.youtube.com/watch?v=3gWrthH2OK4&feature=youtu.be&t=1m20s