The MG39 Rh was a general-purpose machine gun of German origin.
[1] It originated from a draft specification and contest held for an MG 34 Einheitsmaschinengewehr replacement that was better suited for mass production.
[2] The designs and mock-up guns proposals were submitted in October 1937.
[1] Großfuß AG's entry proved to be the best design to simplify and rationalize the technical concept of the MG 34, employing a unique recoil-operated roller locking mechanism whereas the two competing entries used a gas-actuated system.
The only surviving example is at the Military Historical Institute of Prague in Czech Republic.