Mortar wrote There is a piece of equipment called the 9-Bang Grenade. This has the potential to act as an EMP device, the strength of piece of equipment is determined by how long you cook it, and for the EMP effect, you need to cook it for the maximum length of time, any less and it will work as a rapid flash grenade.

You can refer to this topic for more information on Call of Duty: Ghosts

Im backin him up. I did hear a youtube ranting on them. If you hold the 9-Bang grenade long enough then it will become an EMP grenade.

Over powered in mw3? you mean in black ops 2