I know this would have to mean either someone tampered with his own mag, gave him a mag, or gave him a gun.... but that last shot seems like way different ammo. Maybe he thought he was simply peppering people with less lethal ammo and then the BAM, shoots a real round unexpectedly. Set up to ratchet up the bloodshed and narrative they had to use lethal force. Check out vid and let me know what you think.