Eager for something different, yet still in the Call of Duty vein? Well then try the new Counter-Strike Source Modern Warfare 2 sound mod.
The mod features new sound effects for every weapon in the game, excluding grenades. All firing and reloading sounds are taken from Modern Warfare 2, save for the MP5 (Call of Duty 4) and the P228, FiveseveN, and Elite firing sounds (Call of Duty: Black Ops). Keep an eye out for an upcoming Call of Duty: Black Ops sound pack.