Which of the following describes the MK19 characteristics?

Which of the following describes the MK19 characteristics?

• A. Air cooled, belt fed, blowback operated, semi automatic grenade machine gun, crew served, designed not to cook off, fired from the open bolt position
• B. Air cooled, belt fed, blowback operated, fully automatic grenade machine gun, crew served, designed not to cook off, fired from the open bolt position
• C. Air cooled, belt fed, blowback operated, fully automatic grenade machine gun, crew served, designed to cook off, fired from the open bolt position
• D. Water cooled, belt fed, blowback operated, fully automatic grenade machine gun, crew served, designed not to cook off, fired from the open bolt position

Answer: (B)

The MK19 is an automatic grenade launcher with features that match a belt-fed, blowback-operated, air-cooled design, firing continuously in fully automatic mode from an open-bolt position, and it is crew-served. It uses 40mm grenades and is built to prevent cook-off, meaning the chamber won’t ignite rounds from heat if the weapon isn’t fired. Open-bolt operation helps keep the chamber cooler between shots, which is crucial for a weapon that fires grenades rapidly. Water cooling isn’t used on this weapon, and it isn’t semi-automatic. These traits together describe a fully automatic, air-cooled, belt-fed grenade machine gun designed to avoid cook-off, fired from the open bolt position.

The MK19 is an automatic grenade launcher with features that match a belt-fed, blowback-operated, air-cooled design, firing continuously in fully automatic mode from an open-bolt position, and it is crew-served. It uses 40mm grenades and is built to prevent cook-off, meaning the chamber won’t ignite rounds from heat if the weapon isn’t fired. Open-bolt operation helps keep the chamber cooler between shots, which is crucial for a weapon that fires grenades rapidly. Water cooling isn’t used on this weapon, and it isn’t semi-automatic. These traits together describe a fully automatic, air-cooled, belt-fed grenade machine gun designed to avoid cook-off, fired from the open bolt position.