Which weapon is 40mm, blowback operated, belt-fed, air-cooled, fully automatic grenade launcher used from tripod or vehicle mount with a max range of 2,200 meters?

• A. MK-19
• B. M777
• C. M224
• D. TOW system

Answer: (A)

This item tests your ability to match a specific weapon’s mechanical traits to its identity. A weapon described as 40mm, blowback operated, belt-fed, air-cooled, and fully automatic, designed for use from a tripod or vehicle mount with a maximum range around 2,200 meters, is the MK-19. The MK-19 is the standard 40×53 mm automatic grenade launcher; it feeds rounds from a belt, uses blowback to cycle ammunition, is air-cooled for sustained fire, and is deployed from tripods or vehicle mounts. Its maximum range is about 2,200 meters with high-velocity 40mm grenades, and its rate of fire is high enough for area suppression.

The other options don’t fit this combination: a 155mm howitzer is the M777, which is not a grenade launcher and is a larger artillery piece; the M224 is a 60mm mortar, which is not belt-fed or blowback-operated and is not a 40mm automatic system; the TOW system is a guided anti-tank missile launcher, not a grenade launcher.