The MP40, or Maschinenpistole 40, is a submachine gun developed in Germany during World War II. It was designed for use by infantry and paratroopers, featuring a compact design that made it easy to handle in close combat situations. The MP40 fires 9mm cartridges and has a magazine capacity of 32 rounds, allowing for sustained fire. This weapon became iconic due to its widespread use by the Wehrmacht and SS forces. Its simple blowback operation and folding stock contributed to its popularity among soldiers. The MP40 remains a notable example of military firearms from the era.