Call of Duty: World at War/Pack-A-Punch

The Pack-A-Punch Machine is a weapon upgrader found in all Zombie mode maps in World at War and Black Ops from Map Pack 3 (Der Riese) onward.

Details
It costs 5000 points to upgrade a weapon of the player's choice, but for some weapons this may not be a wise investment as the downsides for some players outweigh the increased ammunition supply and/or size of the clip and power. In order to commonly access the machine, Players first need to turn on the power and/or complete a special task to reach it. In Der Riese, all the teleporters must be linked, in Kino der Toten the power must be on, in Ascension all the Lunar landers must be activated and the Rocket blocking the entrance activated, in Shangri La pressure plates must be pressed down depending on the amount of players. In Call of the Dead the machine roams around the map like the Mystery Box and in Moon, players must use the teleporter from the moon base to Area 51 to access, thought the machine does not need the power to be turned on.