I would like to have a Beretta M38A, with 30 rounds it be a great gun for between tier 2-3 smg, or has a popcorn event gun. and we’ll finally complete the trifecta of mag sizes for the Beretta m38a 20-30-40.
Also for tank decor they have the model for the 30 round mag.
Well, there’s no need to always fully load 40rnd mag, 30-32 can do just fine.
In fact, it was a common practice to underload a mag, WWII tech was as advanced compared to later eras, issues with mag and mag spring were not unheard of, especially with worn-down mags.
Schmeisser pattern mag used in MP-18, MP 28, MP-40 and STEN variants was commonly loaded only to 28-38 round out of 32. Same with BRENs - 27-28 rounds load was a common practice.
We already have this with Lewis and DP pan mags - they can take 50 rounds, but are loaded with 47.
Another option for 32 round smg with 690 max RoF (like Beretta 38a) would be already mentioned MP-28 II, which is available in some form to UK and IJA already. Funny how Germans were forgotten by devs, would not surprise me if they add a Soviet partizan unit with trophy MP-28s instead.
German “MP-28” ingame are infact post WWI versions of MP-18 without drum mag (which was commisioned by German Empire). It had 550 RPM with early 20rnd and later 32rnd mags, mainly use by Weimar police forces.
MP-28 II is an update of MP-20 version (it’s really complicated). It had 690 RPM and was copied by British Navy in 1940s as Lancester.
It’s like calling an AKM a “AK-101”, same internal mechanic, but the gun itself is different.
And Japanese have Swiss made MP-20 as “MP28 7.65” - wrong name, wrong caliber they’ve never used.