Woman in news conference now reports three shots “pow pow pow” then four seconds later, a four round burst “pu-pu-pu-pow”. Doesn’t sound like select fire.
Three SHORT bursts doesn’t sound like any kind of fire I ever heard of, I expect it was supposed to be three SHOT bursts but what I heard her say was three SHORT bursts. In any event an AR-15 only fires once when the trigger is pulled, not any kind of burst.