Same as Newtown only this time its the Father's AR-15 that killed the whole family. Those guns just keep turnng up don't they? That's why we need to ban them.The family massacre immediately evoked memories of last year's mass shootings in Newtown, Conn. Griego also allegedly used multiple weapons including an AR-15 assault rifle. In both cases, the gunman first shot his mother. In Newtown, the shooter used his mother's guns, while in Albuquerque, Houston says, Greg Griego owned the guns.