I doubt very much a bumpstock was even used by the shooters in Vegas. This whole thing smells of an FBI cover-up and with their recent track record, I would not believe a thing they say. The guy had access to all those weapons and he chooses a bumpstock for sustained rate of fire? I call BS. I have heard the recordings of the shots. Way too regular for bumpstock action, even in the hands of an obvious operator like Paddock, lol. I believe the mobsters that own the police in Vegas don't want word getting out it was a terrorist attack. Would destroy their only means of income. Let no crisis go to waste, right?