“It takes months if not years to legally buy an automatic weapon. The ATF claims he bought these in the last few weeks.”
Like I said, Omar could have easily had that gun illegally converted to full auto in no time flat.
Video of his live fire here:
http://www.independent.co.uk/news/world/americas/omar-mateen-orlando-gay-night-club-gunman-worked-for-global-security-firm-g4s-a7078476.html
also: “Officials said he had two firearms licenses, a security officer license and a statewide firearms license, all expiring in September 2017.”