Uploaded May 2026 | Updated September 2026, 2 weeks ago
The Mk 19 (Mark 19) 40mm Automatic Grenade Launcher is an air-cooled, belt-fed, blowback-operated machine gun. Instead of firing standard bullets, it unleashes a devastating stream of explosive grenades at a cyclic rate of 325 to 375 rounds per minute.
First designed by the U.S. Navy during the Vietnam War to protect riverine patrol boats, the Army adopted an upgraded version (the Mk 19 Mod 3) in the 1980s. Today, it serves as a primary heavy-weapon system for infantry, motorized, and mechanized units.
The Mk 19 (Mark 19) 40mm Automatic Grenade Launcher is an air-cooled, belt-fed, blowback-operated machine gun. Instead of firing standard bullets, it unleashes a devastating stream of explosive grenades at a cyclic rate of 325 to 375 rounds per minute.
First designed by the U.S. Navy during the Vietnam War to protect riverine patrol boats, the Army adopted an upgraded version (the Mk 19 Mod 3) in the 1980s. Today, it serves as a primary heavy-weapon system for infantry, motorized, and mechanized units.
