The HK21 is a general purpose machine gun made by German firearms company, Heckler & Koch. It, like many of H&K's weapons, is based on the successful G3assault rifle. It is chambered in the 7.62x51mm NATO round and can be fed from the G3's 20-round box magazine, or a 50-round drum magazine designed for the weapon. It has only been featured in Battlefield 2: Euro Force.
Battlefield 2: Euro Force
The HK21 is the standard light machine gun of the EUSupport kit. It has a large 200-round magazine capacity and also has very decent firepower, as well as good accuracy with a moderate recoil.