The Secret Weapon 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 M4, one of the Assault Rifles featured in Call of Duty Modern Warfare 3.
The Secret Weapon blueprint was released in MW3 and Warzone 2 as part of the Bundle Overgrown.
You can find all the attachments for the Modern Warfare 3 and Warzone 2 Secret Weapon Blueprint listed below.
Here are the attachments for the Secret Weapon Blueprint featured in Call of Duty: Modern Warfare 3 and Call of Duty: Warzone 2.
You can build your own Secret Weapon weapon Blueprint by adding these attachments on a base in the Gunsmith menu.
To unlock the Secret Weapon Blueprint in COD Modern Warfare 3 and Warzone 2 you need to purchase the Bundle Overgrown from the Store.