Just about the most prevalent cartridge in the world today, surely everyone has heard of a 9mm - be it in the battlefield as the standard NATO handgun cartridge or the mean streets of your local ghetto, the 9mm Luger/Parabellum is absolutely everywhere.
Introduced in 1902 the 9mm has become accepted world-wide as the de facto handgun round, boosted in the 80's with the US Army's adoption of the M9 (essentially a Beretta 92F), which uses these 9x19mm cartridges. Beloved of rappers, cops, robbers and just about every armed force on the planet you'll find them in so many handguns and submachineguns that movies, firefights and rap music just wouldn't be the same if it weren't for this little beauty.
Fancy one of these for yourself or someone else? With the 9mm, you've got 13 characters per line to play with – so get customizing!