The term "9mm NATO" refers to a specific type of ammunition used primarily by military forces. It is a variant of the standard 9mm Parabellum cartridge, designed to meet the requirements of NATO (North Atlantic Treaty Organization) member countries. This cartridge is known for its reliability and effectiveness in various firearms, including handguns and submachine guns. 9mm NATO ammunition typically features a higher pressure than standard 9mm rounds, which allows for increased velocity and performance. It is widely used in military and law enforcement applications, making it one of the most popular calibers globally. The round is compatible with many firearms, enhancing its versatility in combat situations.