The FG 42 Schiessbecher Paratrooper squad has been incorrect since the beginning. It is firing an AT grenade but its acting like a HE grenade. There have been many times I could’ve used this grenade launcher against tanks but alas its a phony AT grenade
Now of coarse you could just change the model to the correct HE rifle grenade, but there’s an even better solution
First and foremost fix this FG 42 Schiessbecher. It is firing the Gross-Panzergranate and has a penetration of 70mm
Second, add a new Paratrooper squad with a FG 42 Schiessbecher with a HE grenade. The Luftwaffe experimented with attaching rifle grenade launchers to their FG 42. The launcher firing AT grenades was actually more successful than with HE grenades; but ultimately the project was scraped
This Paratrooper squad could also be an event like its original AT brother