they could not upgrade their weapon and keep their long range dps which would be buffed by the vet accuracy
Nobody claimed it wasn't the same weapon?
Also I have no idea why people would ever want MP 40s to replace the STG 44s for Volks, it would make them terrible mainline infantry on any map that isn't urban. Imagine being forced to pick MP 40s on wide open maps when having to run into Penals, double BAR or M1919 Riflemen or double Bren 5 men Tommies. There is no veterancy accuracy or RA buff in the world that would save them from being mowed down on approach.
IMO their STG 44 isn't anything to write home about in the first place.
u know like vcoh, and by moving ober in tier 1 they can field them earlier to counter the upgunnend long range infantry, for bar they just need to close the range with mp40, or keep it at long range when they have vet for an equal chance
for approaching they already have smoke nades with the mp 40s and again they would be equal to as green