It seems that the numbers are making me confused as well, but I think there are 2 types of MG draws my interest, which is MG34 and MG42.
From what I studied it seems that MG3 is better than MG45 as MG45 is just a prototype. It states that MG42 (typo, sorry) is a weapon that uses till now like HMG M1919. Another thing that I am pretty confused is that MG42 was the best MG at that time (so many variants on MG42), how does the weapon drop to Austria's hands?
And I think the terms and names used are quite unique as well which makes me found it interesting. And it seems that even the term Volks also have 2 different meaning but from what I understand, Volksgrenadiers as an example, is an army that drafted from normal citizens, where they called it People's army and the concept should be similar like Conscripts. But it seems that there are second meaning for that, which related to nationalism?