The 7.62x51mm NATO is a rifle cartridge developed in the early 1950s for use by NATO forces. It features a bullet diameter of 7.62 mm and a case length of 51 mm, making it suitable for a variety of military rifles and machine guns. This cartridge is known for its accuracy and effective range, making it a popular choice among armed forces. The 7.62x51mm NATO is often compared to the civilian 7.62x51mm and 7.62 NATO cartridges, which are essentially the same but may have different specifications. It is widely used in military applications and has been adopted by many countries around the world.