In the "Call Of Duty: Zombies" map "Der Riese", what is the name of the "Pack-A-Punched PPSH-41"?

In the Call of Duty: Zombies map "Der Riese," the name of the Pack-a-Punched PPSH-41 is "The Reaper." The name is most likely derived from the enhanced abilities and devastating power that the Pack-a-Punched version of the weapon possesses. The upgraded PPSH-41 becomes a force to be reckoned with, delivering a torrent of bullets that reaps through the hordes of zombies, earning it the appropriate moniker of "The Reaper."