Shooting the HK21 Modular Machine Gun
This video features a range test of the HK21, a belt-fed variant of H&K's roller-delayed blowback system. The narrator details its origins, its commonality with other H&K firearms like the MP5 and HK33, and its modular design allowing for different calibers and feed mechanisms. The 7.62mm model demonstrated is noted for its reliability in harsh conditions, though it's also described as having harsher recoil than comparable firearms. The video thanks H&K USA for access and Trijicon for range use and optic provision.













