Ppsh41 is just an example but i see nothing wrong in do it with just some guns,player are asking a way to use common ww2 gun in early level who are to strong for early level (role play, historical accuracy ecc…) introduce nerfed version of them as sidegrade can be the perfect solution withaut force strange solution on the matchmaking
Maybe declare them as scrap weapons used by second line troops. Weapons that are damaged or not good maintained.