Heckler and Koch HK21A1: A belt-feed-only general-purpose machine gun
The Heckler and Koch HK21A1 was the further development of the HK21 gun, which has been in military service for … Read More
HK21A1
The Heckler and Koch HK21A1 was the further development of the HK21 gun, which has been in military service for … Read More