As far as i understand it, an LMG42 was kind of a relic back in ww2 and this is somehow emulated by its performance, conscripts with one could wreak havok at vet3 with it.
I don’t think it was a relic, the ‘42’ means it is a 1942 design. Unless I’m mistaken it was based on the mg34 (1934 design) but had a simplified mechanism (no burst shot option?) and was pressed rather than cast making it easier to make and more reliable. It’s design is the basis for many modern mg’s. Irrelevant to the topic I know