If my aging eyes are not failing me. Does anyone else notice that the rear flip-up side is in the down position? How does an effective shooter not use his/her sights? Something tells me this whack-o-doddle wasn’t very familiar with the illegal (at least in the People’s Republic of Kalifornia) weapon he was using for this incident.
I'm not sure that it was illegal in California.
http://www.thetruthaboutguns.com/2013/11/robert-farago/lax-shooter-passed-nics-background-check-bought-gun-legally/
The gun in question was as S&W M&P-15 in .223. There is a California compliant version that has a fixed magazine and a bullet button. He could have been using "10/30" magazines that look like normal magazines but are modified to only hold 10 rounds.