What is 9x21 guns?

The 9x21mm caliber is a handgun cartridge designed for use in semi-automatic pistols. It was developed in Italy in the early 1990s as a replacement for the 9mm Luger cartridge, which is more commonly known as the 9mm Parabellum. The 9x21mm cartridge is slightly longer than the 9mm Luger, but has the same bullet diameter of 9mm.

The main advantage of using 9x21mm ammunition over other 9mm cartridges is that it is the legal cartridge in countries that only allow civilians to own firearms with calibers of a minimum of 9mm. The 9x21mm cartridge is also preferred by law enforcement agencies as it is easier to control and has a lower recoil than the 9mm Luger.

Some popular handguns that are chambered for the 9x21mm cartridge include the Beretta 98A1, the CZ-75B, the Jericho 941, and the Taurus PT92. The 9x21mm cartridge is also used in some competition shooting events due to its accuracy and controllability.