Better give them another weapon then. FG42 had higher RoF than an UZI.
The full auto was probably rarely used though.
Depends on the version. FG42 Ausf. E had about 900 rounds, while the Ausf. G had 750 rounds. UZI is iirc about 600 to 650 rounds (only had this in Bundeswehr time as MP2). Also there were even more Ausf. from the FG42
Still the 8mm Mauser packed a punch like a donkey. Even more than current nato 7,62 rounds. So "rarely" is kinda underrated
And than this SMG behaviour is kinda bullshit. It should be semi automatic or "slow" automatic fire like in CoH1 with a good punch and not this pee shooter SMG style.