There are few automatic weapons, if any, as lethal as the Mark 19. Initially developed during the Vietnam War, the American 40mm belt-fed automatic grenade launcher is a potent automatic weapon that delivers deadly grenades at a rate impossible to ignore or abate. The Mark 19 is a belt-fed, blowback-operated, air-cooled, crew-served, fully automatic weapon that is designed not to cook off.
It fires 40mm 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). Not bullets, but grenades!
The Mark-19 can launch grenades as far as 2,212 meters, with an effective range to a point target of about 1,500 meters.
This video shows the murderous automatic grenade launcher in action as Marines and soldiers shoot the devastating grenades and film the impacts. Powerful stuff.
Check it out: