How A FN M240 Bravo Works

Wikipedia: The M240, officially the Machine Gun, mm, M240 or unofficially the M240 Bravo, is the U.S. military designation for the FN MAG “gas-operated machine gun“; alternatively, Mitrailleuse d’Appui General, “general support machine gun“), a family of belt-fed, gas-operated medium machine guns that chamber the ×51mm NATO cartridge.[1] The M240 has been used by the United States Armed Forces since the late 1970s. It is used extensively by infantry, most often in rifle companies, as well as on ground vehicles, watercraft and aircraft. Despite being heavier than some comparable weapons, it is highly regarded for reliability and its standardization among NATO members is a major advantage. All variants are fed from disintegrating belts and are capable of firing most types of mm (.30/.308 cal) NATO ammunition. M240 variants can be converted to use non-disintegrating belts. There are significant differences in weight and some features among some versions wh