The HK21 is a series of light machine guns developed by Heckler & Koch, chambered in 7.62x51mm NATO.

Design detailsEdit

The HK21 is an air-cooled, gas-operated, light support weapon chambered in 7.62x51mm NATO. It is capable of firing up to 750 RPM.


There are several variants, such as the common 21E, or the 21A.

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