The Geraet 07 or Mauser G44 (M) Rifle.

[klem]

After the G43 W, the Germans developed the Geraet 07 or the Mauser G44(M) but with the STG in the field, this weapon no longer had a reason to exist and after the war this Mauser G44(M) ended its life in a military museum in France. (Full Circle: A Treatise on Roller Locking-R Blake Stevens-Collector Stage Publications.2006)