A gun found in the Gardelle County Jail level in Liveside. Not much different than the 0.9 SMG gun in the game, other than it also shares the same bullets and can hold 400. Can only be used in Liveside levels (Gardelle Jail, Mordant Street, New York|Mordant Street]], and Down Street Station ) whether the player plays as Shadow Man or Mike.
- The MP-909 seems to be based on a H&K MP5SD. It would make sense seeing as how the sound is rather soft (compared to the Shotgun and Handgun) and is most likely chambered in 9mm cartridges.