This is an outstanding example of a very scarce and very desirable HK21 type belt feed light machine gun as manufactured by the Qualified Manufacturing Company of Broken Arrow, OK. The HK21 MGs were originally introduced in 1961 for the German Army and German Police where they stayed in service for 20 plus years before being completely replaced by the Rheinmetall MG3 (an updated version of the original MG42). Currently, they are in use by several Asian and South American countries. The HK 21 is a selective fire light machine gun that fires from a closed bolt that uses the tried and true delayed, roller-block system as used in the German G3 rifles. This is the original design with the solid magazine well with the slide in feed box system that uses the American M13 linked belt, the German DM6 linked belt (counterpart to the M13) or the segmented German DM1 belt. It has the welded on the side reinforcing plates along with a perforated front receiver area. The top of the receiver is marked "HK 21 QM 006", and the lower left side of the receiver is marked: "QUAL. MFG./BRO. ARR. OK." It is fitted with the standard 3-position trigger pack marked "S E and F", the standard post front sight and the 1200 meter adjustable drum rear sight, and a 17 1/2 inch quick change barrel with a HK type flash hider that is etched on the side of the locking area: "QM 006". The top of the bolt head is stamped "HK 9/74", and the top of the bolt carrier is marked "FMP 3/86" and then etched "006"to match the barrel. It has the heavy HK 21 type folding bipod on the front end, and the standard black plastic HK pistol grip and buttstock.