....but once it hits vet you can incind rounds to rip right through light vehicles that approach.
In theory, but not in practice. MG42 incendiary special has a very long reload animation which gives opponent a long window to leisurely kill off the MG/flank before it finishes. On top of which, you must pray that the gunner isn't killed or the whole process drags on even longer--the whole time the MG is not firing, by the way.
...what about grenades and smoke? you can hear and see when riflemen are about to throw grenades and smoke. so pack up ur fucking mg and reposition it.
This comment is fairly amateurish and seems to ignore completely, the fact that MG42's can't reposition. The pack-up animation is REALLY long, and the unit walks slowly, that you're going to be overwhelmed by the allied player. Especially if he has shocks (which have smoke!). Regardless of the allied unit, as soon as you see smoke, the best option is to retreat or lose the MG outright. This is the case, 99% of the time.