In Meltdown, three police officers are using electric shock weapons on RoboCop while RoboCable is rebooting. When he is successfully rebooted RoboCable intervenes and shoots the three officers. One of those officers moves as if shot before RoboCable even opens fire and is already out of frame (presumably dead) when the other two officers are shot.
Twelve minutes in, when Robo aims his Beretta 93F at his assailant, you can clearly see mould lines on the plastic prop along the trigger guard and along the long axis; someone also forgot to drill out the barrel.