(Gillian Brockell/The Washington Post)
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What to know about assault-style rifles

June 13, 2016 | 3:26 AM GMT
Here’s what you need to know about the guns some are calling “the gold standard for mass murder,” after Orlando shooter Omar Mateen used the assault-style rifle Sig Sauer MCX to kill at least 49 people. (Editor's note: This video has been updated with more specific information.)