U.S. designation for the FN MAG family
mediumThe M240 is the U.S. military's 7.62 mm medium machine gun family derived from the Belgian FN MAG 58.
The M240 is the U.S. military designation for the FN MAG 58-derived 7.62x51 mm NATO medium machine gun family. FN America describes the M240 general-purpose machine gun as adopted by the U.S. military in the late 1970s and continually used since introduction. FN's own company history also notes that its Columbia, South Carolina plant was opened in 1981 with production of the FN MAG/M240 for the U.S. Army as a central purpose. This gives the equipment page a clear origin story: Belgian design lineage, U.S. production, and long-term institutional adoption across American ground, vehicle, aircraft, and naval applications.



