According to Defense Blog, German Federal Office of Bundeswehr Equipment, Information Technology and In-Service Support (BAAINBw) have tested the MG4 A3 light machine gun, manufactured by German firearm company Heckler & Koch. 

The advanced version of MG4 is expected to replace MG3 machine guns currently in field service with Bundeswehr soldiers. 

Three-week test trials were recently completed with soldiers from the 26th Airborne Brigade based in Zweibrücken, a NATO military air base in West Germany.