M240

The M240B is a light machine gun featured in Call of Duty: Modern Warfare 2. It is a belt-fed, gas-operated medium machine gun and the US designation for the Belgian FN MAG 58. The main differences between the two is the addition of a picannty rail on top and a new stock. The United States have used it since the mid 1980's, replacing the M60, mostly by infantry. However, other variants are used by ground vehicles, watercraft, and aircraft alike. The M240 is praised for its reliability, even though it is not the lightest medium machine gun in service. The M240 is currently manufactured by the American division of the Belgian company FN Herstal. It is currently supplemented in the US Army by the M240's "younger brother" the M249 SAW.

Call of Duty: Modern Warfare 2
The M240 is used by Makarov's terrorists in the Russian airport. The purpose for using Western (and mostly American) firearms is to divert suspicion from the Ultranationalists and to a western perpetrator. It is also used by American forces, though it is unknown if it replaces or supplements the M249 SAW.