HK23

Even though the roller-delayed blowback operated HK21 was not adopted into main service by Bundeswehr, Heckler & Koch (HK) did not give up with the G3 derived MG models, they switched the development focus for export instead. Following NATO's interest in 5.56 calibre light machineguns, a step down version of HK21 was produced, the 5.56 calibre HK23. While retains most features from HK21, major changes to HK23 would be the reworked barrel and feeding mechanism to incorporate the smaller 5.56x45mm cartridge, but the mechanism working principle remains the same, the weapon still fires from a c...