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Heckler & Koch MG5

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Heckler & Koch MG5/HK121
Country of origin



Heckler & Koch

Production began


Weapon type

General purpose machine gun


7.62x51mm NATO


Gas-operated, rotating bolt

Overall length

45.9 inches (116.5 centimeters)

Barrel length

21.7 inches (55 centimeters)

Weight empty

24.7 pounds (11.2 kilograms)

Cyclic rate

640-800 RPM

The Heckler & Koch MG5 (previously known as the HK121) is a general purpose machine gun manufactured by Heckler & Koch.


The weapon is intended as a replacement for the well proven Rheinmetall MG3. Fifteen pre-production units were order by the Bundeswehr, designated as the MG5, with 1215 units ordered initially. A total procurement of 12733 units with a total production cost of about €200 million have been delayed due to accuracy concerns.

Design DetailsEdit

The weapon operates very similarly to the older Heckler & Koch MG4; gas-operated with a rotating bolt.


See AlsoEdit

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