Pack-a-Punch Machine

The Pack-a-Punch Machine is an in-game utility for the Nazi Zombies map Der Riese. This utility is much like the mystery box or the Perk-a-cola machines. The Pack-a-Punch machine allows upgrades to the majority of the weapons found in the zombie level. The Pack-a-Punch machine also changes the names of weapons and doesn't always make your weapon stronger. For example the Ray Gun is changed to Porter's X2 Ray Gun and will not get stronger but instead shoot out red rays, increase magazine and reduce the splash damage of the weapon (that way it won't harm you as much when shooting close distance zombies or dogs). The nature of the upgrades on guns is not known when being upgraded, but the Pack-a-Punch also puts elaborate engravings on them. The Pack-A-Punch Machine requires the power to be on, all 3 teleporters to be linked to the mainframe, a compatible gun and 5000 points.

Effects on weapons
NOTE: All bullet-based weapons emit a red flash when firing

Trivia

 * Above the Pack-a-Punch Machine, there are two depictions of a Ray Gun, one with a 'flaccid' barrel and the other 'erect'.


 * There is also a picture under the machine. The picture is a no symbol (a circle with a diagonal slash inside) with a hand inside of the circle.


 * When a weapon is upgraded in the Pack-a-Punch Machine, only the metallic parts and the magazine are engraved with the markings, and not the wooden parts of the weapon. This is easily be attested to by the M1A1 Carbine, Gewehr 43, and the M1 Garand. This is similar of how the camouflages of Cod 4 would only cover the metal parts.


 * When a weapon is being upgraded a small red flag that says "Please Wait" rises on the right side of the Ray gun depictions.


 * When a weapon is upgraded in Pack-a-Punch, a small jingle will play like Perk-a-Cola machines and at the end if you hear carefully there's a wolfman howl after the end of the jingle.


 * Your character always cracks their knuckles as they wait for their weapon to be upgraded.

Source
The names of all the weapons available, and their names afterward, for the Pack-a-Punch machine can be found on this section of the World at War official website.

Effects are determined through playtesting.

Check out this video to see most of the Pack-a-Punch weapons in action.

Also see: Pack-A-Punch Weapons

Achievements
There are three achievements associated with this machine.
 * Elevate Your Senses is awarded for turning on the Fly Trap by shooting a control panel with an upgraded gun.
 * Pack Addict is awarded for upgrading five guns in one game.
 * Wacker Packer is for upgrading a gun for the first time.