FAD

The FAD is a bullpup Assault Rifle that is set to appear in Call of Duty: Modern Warfare 3. It was first seen on Sledgehammer Games' website page.

Call of Duty: Modern Warfare 3
Not much is known about this weapon, other than it appears to be a bullpup assault rifle, similar to the TAR-21 and Famas.

Multiplayer
The FAD is unlocked at Level 78 in Modern Warfare 3's multiplayer.