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For other derivatives of the G3, see G3A3, AR33 and MP5

The HK21 is a machine gun derivative of the G3 rifle. The HK21 is a general-purpose machine gun manufactured by Heckler & Koch that chambers the 7.62x51mm NATO round..

Although the original HK21 itself does not appear in the Rainbow Six universe, there are variants of the weapon that have:

  • The 21E is a magazine-fed variant chambered in its native 7.62×51mm NATO caliber.
  • The 23E is 5.56x45mm NATO conversion of the HK21E.
  • The G8A1 is a German military designation of the light machine gun, coming with the modifications of an HK11A1.

The HK21 is categorized as a light machine gun in the Rainbow Six universe.






Tom Clancy's Rainbow Six: Vegas 1 and 2

  • The 21E is limited to full-auto fire in-game, despite the weapon having a fire selector in real life. On the model of the 21E, the player could see the option for 3 round burst and semi-auto.
  • The 21E in-game has a fire selector that is locked on safe at all times.


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