Marine Corps Weapon Systems: MK19

The MK19, also known as the "Mark 19," is a highly effective weapon when effective suppressive fire support is needed. It is capable of wiping out light armored vehicles and protecting supply convoys. The MK19 provides Marine infantry battalions with the means to deliver massive direct fire or indirect fire from hidden positions. The MK19 rapidly fires explosive 40mm grenades, making it an ideal weapon against enemy armored, mechanized, and infantry forces. Marines become familiar with this while attending SOI.

Characteristics of the MK19

Belt-fed, blowback-operated, air-cooled, crew-served, fully automatic weapon.

  • Primary Function - Infantry weapon for effective fire support
  • Length - 43 inches
  • Weight - 72 pounds (with accessories)
  • Muzzle Velocity - 790 FPS
  • Maximum Effective Range- 1,400 meters
  • Maximum Range- 2,023 meters
  • Rate of Fire:
    Rapid - 600 RPM
    Sustained - 40 RPM
  • Capacity - Ammunition comes in 32 or 48 round containers

To learn more about the MK19, please click here...

Marine Corps Weapons System

Reviewed by CH


September 29, 2014: Marines with Ammo Company, 1st Supply Battalion, operate an Mk19 automatic grenade launcher aboard Marine Corps Base Camp Pendleton, Calif., Sept. 17, 2014. The Marines were required to engage simulated targets while conducting the basic machine gun course. The live-fire ranges were part of an annual training package to keep the Marines confident and proficient with each weapon system.
—USMC photo by Lance Cpl. William Perkins

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