9mm (9×19mm, also called 9mm Luger or Parabellum) is the most widely used handgun cartridge in the world, balancing manageable recoil, good magazine capacity, and broad availability.

9mm is a centerfire pistol cartridge found in everything from compact concealed-carry pistols to full-size duty handguns and pistol-caliber carbines. It is known for relatively mild, controllable recoil that most shooters find easy to manage, which makes it popular for training and high-volume range practice. Ammunition is among the most available and affordable of any centerfire cartridge, in a wide range of bullet weights and types. Modern defensive loads have made it a standard choice for personal protection and law enforcement. It suits a broad range of shooters, from newer handgun owners to experienced competitors.

General information about this caliber — not a recommendation for this specific firearm.