'''7.62x39mm''' is a type of [[ammunition]] for firearms. It is classified as a <span style="color:#AA0000">'''(R)'''</span>ifle caliber, and was originally designed for a number of firearms; the [[Simonov SKS]] semi-automatic rifle, the [[Degtyaryov RPD]] machine gun, and the Kalashnikov AK-47, which was succeeded by its far more well-known modernized version, the [[AKM]].
In real life, 7.6x39mm 62x39mm is designated as an 'intermediate' cartridge, because it is more powerful than a pistol round, but less than a "full-size" rifle round. Although it wasn't the first of its kind (that honor goes to [[7.92x33mm Kurz]]), it was, by far, the most popular, owing to the proliferation of AK-family rifles. 7.62x39mm AK-pattern rifles are, by far, the most common type of assault rifle in the world.
7.62x39mm is typically pronounced ''seven point six two by thirty-nine millimeters''. It is also acceptable to pronounce 7.62 ''seven six two''.