History: The 9mm Auto, also known as the 9mm Parabellum and 9mm Luger, was first introduced with the Luger pistol in 1902. It was first adopted by the German military as the standard side arm caliber, and then, over the years, by nearly every other developed nation including the United States. Its notoriety increased with the explosion of "wondernines", high capacity autoloaders that take advantage of the cartridge's relatively small size.

Description: The 9mm round, while possessing fairly little recoil, is only moderately effective. It performs poorly against an armored target. It also doesn't have the serious knockdown power of larger cartridges, like the 45 ACP. Because of its light damage, it is most useful in a rapid fire weapon, like a submachinegun.