So I’ve been wondering about which SMG to use for my medic squad - Kiraly 39M or MP 717(r)? On the one hand, Kiraly has more damage but on the other, MP 717 has more magazine capacity and less recoil.
Also, which recoil perk is better for which weapon?
the german ppsh is much better than the kiraly. use the -40% vertical recoil reduction, it makes a huge difference and improves the performance of all the top smgs (kiraly, ppsh, mkb) immensely
People wo think the ppsh is better dont know how control the fire
I mean, Kiraly is way harder to control.
No need to control anything when u spray and pray like a returd 
For smgs, rule of thumb, use vertical recoil reduction perk.
As for ppsh41 vs Kiraly… Use the one you like the most. I use a mix of both. Captured ppsh you can hold the trigger and delete a group reliably without the need to control the recoil much. Kiraly has more stopping power, but is better used in short controlled bursts (unless in cqc).
In short, both are good.
Kiraly with vertical for me, I’ve gotten in love with the Kiraly’s recoil. I say to master it, just get used to it, practice with it and just keep playing it, your muscle memory will come around and you’ll be getting headshots left and right.