As an expert in military and firearms history, I can tell you that "7.62" typically refers to a caliber of ammunition, specifically the diameter of the bullet in millimeters. The
7.62mm caliber is used in a variety of firearms, including rifles and machine guns. One of the most famous cartridges in this caliber is the
7.62×39mm, which was designed by the Soviet Union and is widely used in the AK-47 and other weapons. There are also other types of 7.62mm cartridges, such as the
7.62×51mm NATO, which is used in the NATO countries, and the
7.62×54mm R, which is a Russian rimmed cartridge.
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