The first Battle Rating has an interesting weapon, the Schmeisser MK.36.III automatic carbine with a low rate of fire of 480 rounds per minute, like semi-automatic carbines such as the Beretta 1918/30.
I propose to increase its rate of fire to 500 rounds per minute, as was indicated in reality.


https://modernfirearms.net/en/submachine-guns/germany-submachine-guns/mk-36-schmeisser-eng/
Due to the low rate of fire and small 20-round magazine, it can sometimes be difficult in firefights with other submachine guns. These changes will not affect the balance in any way.