It was kind of a small story, but some 16 yr old killed his parents, sister and family friend with what is being reported as a "Century Arms semiautomatic rifle"...so expect to hear more of this in the coming days.
http://www.foxnews.com/us/2018/01/01/teenager-murders-his-family-members-on-new-years-eve-officials-say.html
http://www.foxnews.com/us/2018/01/01/teenager-murders-his-family-members-on-new-years-eve-officials-say.html