What is the muzzle velocity of the MK19 in feet per second?

• A. 790 fps
• B. 680 fps
• C. 1000 fps
• D. 3000 fps

Answer: (A)

Muzzle velocity is the speed at which the projectile leaves the muzzle, set by the combination of the cartridge design, propellant charge, and barrel length. For the MK19 firing 40x53 mm grenades, the standard rounds exit the barrel at about 790 feet per second. This velocity balances enough speed to reach targets at useful ranges with the flight stability needed for a heavier, explosive payload, producing a reliable arc and timing for detonation near the target.

The other values don’t fit the typical performance of standard 40 mm grenades: 680 fps is lower than the common standard, 1000 fps would require a higher-energy round and different ballistics, and 3000 fps is characteristic of rifle calibers, not grenade rounds.