The Jack Of All is a Weapon Blueprint available in Call of Duty: Modern Warfare 3 (2022) and Call of Duty: Warzone 2.
It is a blueprint variant of the base weapon P890, one of the Handguns featured in Call of Duty Modern Warfare 3.
You can find all the attachments for the Modern Warfare 3 and Warzone 2 Jack Of All Blueprint listed below.
Here are the attachments for the Jack Of All Blueprint featured in Call of Duty: Modern Warfare 3 and Call of Duty: Warzone 2.
You can build your own Jack Of All weapon Blueprint by adding these attachments on a base in the Gunsmith menu.
To unlock the Jack Of All Blueprint in COD Modern Warfare 3 and Warzone 2 you need to reach Sector A8 of the Season 1 Battle Pass.