The Mauser C96 is the starting pistol in the Zombies map Origins, with option to be upgraded to Boomhilda is included with the Apocalypse downloadable content for Call of Duty: Black Ops II and the Zombies Chronicles downloadable content for Call of Duty: Black Ops III. According to design documents and the Zombies Chronicles timeline, the prototype was created by Dr. Ludvig Maxis on January 5th 1915.
Boomhilda
This weapon becomes the Boomhilda when Pack A Punched, acquiring 50 rounds per magazine and 100 more shots in reserve. The lasers it fires in Black Ops II are comparable to those from the Ray Gun Mark 2, with the exception of the damage, which is a one-hit kill until round 30. It also receives an ACOG Scope and a Suppressor.
Zombies
The Mauser C96 performs nearly identically to the M1911. It has very weak damage, taking multiple bullets to kill a single zombie even on the first rounds, medium firecap, a magazine of eight rounds and slight recoil.
In conclusion
When Pack-a-Punched via the Pack-a-Punch Machine, it becomes the Boomhilda. It fires laser bolts with extremely high damage, and it gains an increased magazine, an ACOG Scope and a Suppressor. The Boomhilda is an extremely powerful weapon. Despite its power and the magazine capacity, however, ammunition concerns do arise, as the player only has two extra magazines, making the total starting ammunition a measly 150 bullets. The Boomhilda is a strong weapon in its own right, but is often overlooked compared to weapons such as the staffs and other weapons on the map, such as the KSG, the M1927, and the MG08/15, because the player can only receive the Mauser through digging, keeping it when starting the game, or respawning after death.