The Mk 19 grenade launcher (pronounced Mark 19) is an American 40 mm belt-fed automatic grenade launcher that was first developed during the Vietnam-War. The Mk 19 is a belt-fed, blowback-operated, air-cooled, crew-served, fully automatic weapon that is designed not to cook off. It fires 40 mm grenades at a cyclic rate of 325 to 375 rounds per minute, giving a practical rate of fire of 60 rounds per minute (rapid) and 40 rounds per minute (sustained).
The M240, officially the Machine Gun, 7.62 mm, M240 or unofficially the M240 Bravo, is the U.S. military designation for the FN MAG (Mitrailleuse A Gaz, “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 7.62×51mm NATO cartridge.
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