The Pack a Punch in Tranzit has to be built. Please see the
related link below for a video on how to do this.
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you can only go to the pack a punch room when the rocket lauckes
then under where the rocket was is the pack a punch room
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Verruckt does not have the Pack-A-Punch machine only Der Riese
and the Black Ops Zombie Maps (excluding Dead Ops Arcade) have the
Pack-A-Punch machine.