Pack-a-Punch Machine

The Pack-a-Punch Machine is a new in-game utility for the zombie 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 16 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 Peter's M3 Ray Gun and will not get stronger but instead shoot out red rays and also take away the splash damage of the weapon (that way it won't harm you when shooting close distance zombies or dogs). Some other guns that are upgradable are the Browning M1919 and the PPSh-41. The nature of the upgrades on these guns are not known when being upgraded, but the Pack-a-Punch also puts elaborate engravings on them.

Effects on Weapons
.357 Magnum - Weapon becomes ".357 Plus 1 Kil-u"

BAR - Weapon becomes "The Widow Maker".

Browning M1919 - Weapon becomes "B115 Accelerator".

Double Barreled Shotgun - Weapon becomes "24 Bore Long Range".

Sawed-Off Double Barreled Shotgun w/grip - Weapon becomes "The Snuff Box".

FG42 - Weapon becomes "420 Impeller".

Gewehr 43 - Weapon becomes "G115 Compressor".

M1 Garand - Weapon becomes "M1000".

M1911 - Weapon becomes "C-3000 B1AT CH35".

M1A1 Carbine - Weapon becomes "Widdershins RC-1".

MG42 - Weapon becomes "Barracuda FU-A11".

MP40 - Weapon becomes "The Afterburner".

PPSh-41 - Weapon becomes "The Reaper". Magazine increases to a size that rivals a Machine Gun.

Ray Gun - Weapon becomes "Peter's X2 Ray Gun". Magazine size is doubled and the "splash" damage is removed.

M2 Flamethrower - Weapon becomes "FIW Nitrogen Cooled".

Wunderwaffe DG-2 - Weapon becomes "Wunderwaffe DG-3 JZ"

Naming list (from Callofduty.com)

 * 30 Cal => B115 accelerator
 * BAR => The Widow Maker
 * Colt 45 => C-3000 b1at-ch35
 * Shotgun Double Barreled => 24 Bore long range
 * Shotgun Double Barreled Sawed Grip => The Snuff Box
 * FG42 => 420 Impeller
 * Gewehr43 = > G115 Compressor
 * M1A1 Carbine => Widdershins RC-1
 * M1Garand => M1000
 * MG42 => Barracuda FU-A11
 * MP40 => The Afterburner
 * .357 Magnum => .357 Plus 1 K1L-u
 * PPSh-41 => The Reaper
 * Shotgun => Gut Shot
 * STG-44 => Spatz-447 +
 * Thompson => Gibs-o-matic
 * Type 100 => 1001 Samurais
 * Type 99 => The Eviscerator
 * Panzerschrek => Longinus
 * PTRS-41 => The Penetrator
 * M7 Launcher => The Imploder
 * Kar98k => Armageddon
 * Ray Gun => Peter’s X2 Ray Gun
 * Wunderwaffe DG-2 => Wunderwaffe DG-3 JZ
 * M2 Flamethrower => FIW Nitrogen cooled