Heckler & Koch HK21
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The Heckler & Koch HK21 is a German 7.62×51mm NATO general-purpose machine gun, developed in 1961 by small arms manufacturer Heckler & Koch and based on the HK G3 battle rifle. The machine gun is in u
HK21 with a bipod positioned at the front for maximum stability
HK21 with ammunition belts and bipod mounted at the rear to align with its point of balance
Mexican navy gunners prepare to fire an HK21
Portuguese soldier with an HK21
Heckler & Koch G3
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The Heckler & Koch G3 is a select-fire battle rifle chambered in 7.62×51mm NATO developed in the 1950s by the West German firearms manufacturer Heckler & Koch, in collaboration with the Spanish state-
Heckler & Koch HK21
…Heckler & Koch HK21 is a German 7.62×51mm NATO general-purpose machine gun, developed in 1961 by small arms manufacturer Heckler & Koch and based on the HK G3 battle rifle. The machine gun is in use with the armed forces of several Asian, African and Latin American countries. It was also license-manufactured…
Cutaway model of the chamber with gas relief flutes (left) and roller-delayed action of the G3 battle rifle
Fired cartridge cases with scorch marks at the front outer surface caused by intentional propellant gas ingress at the gas relief flutes
Field-stripped G3A3 rifle showing its modular design
HK G3 Bayonet with scabbard