this guy seems too stupid to afford - much less jump through the hoops required to legally own - a fully-automatic firearm anyways. 100% certain it's a semi-auto, but yeah that's beside the point that he's still a serious potential threat.
it takes a lot of guts and idiocy to barge into someone's place of work during operating hours with a rifle and kill them with it, especially now with the cops hovering around the place often. if anything, i'd be much more worried that the husband might now be even more abusive towards his wife at home
