From December 1942, a square machine gun shield for the loader was installed, allowing an MG34 to be factory installed on a StuG for the first time. When stowed this shield folded back, partially overlapping the front half of the loader's hatch cover. A curved protrusion welded to the backside of the shield pushed the shield forward as the front half of the loader's hatch cover was opened and guided the hatch cover to naturally engage a latch point on the shield thus, supporting the shield in its deployed position without exposing the loader to hostile forward fire. F/8 models had machine gun shields retro-fitted from early 1943. The loader's machine gun shield was later replaced by rotating machine gun mount that could be operated by the loader inside the vehicle sighting through a periscope. In April 1944, 27 of them were being field tested on the Eastern front. Favourable reports led to installation of these "remote" machine gun mounts from the summer of 1944.