Very little separates a civilian AR-15 from the M-16s that are the standard-issue rifle for the American military. The military versions are semi-automatic, but also come with the ability to fire in a three-round burst; this feature is rarely used.
Well, who knew? I was handling a modern military M4A1 last Friday morning, and to my uneducated eyes it appeared to be full auto. In fact, I thought the 3-round burst went away when the M4 upgraded to the M4A1. I guess since the President lies on a daily basis, it sets the tone for his busy little bee minions in the media. Using the same logic, I'd say very little separates my Grey Parrot Ripley from Business Insider correspondent Brian Jones, except that Ripley is smart.