In "Call Of Duty: Zombies", what is the name of the machine that upgrades weapons?

In Call of Duty Zombies, the name of the machine that upgrades weapons is called the Pack-A-Punch. This machine allows players to enhance their weapons by increasing their firepower, adding special abilities, and improving overall performance. By using the Pack-A-Punch, players can transform their standard weapons into considerably more powerful versions, giving them a significant advantage against the hordes of undead enemies that they face in the game.