Geraldo Rivera tweeted video of a truck-mounted machine gun in Mogadishu Wednesday as part of his continuing effort to prove AR-15s are machine guns and should be banned. Rivera’s video also shows a machine gun that is being carried by soldier. Neither of the guns are AR-15s, but he tweeted about them to show his support for an “assault weapons” ban. Breitbart News noted that Geraldo told hosts on FOX News’ The Five that “AR” stands for “automatic rifle.”