I was totally for moving Kiraly into BR4, so I want to make clear that I dont think Kiraly is OP - however I remember pointing out that Kiraly had an unusually fast reload speed and when lowering it to BR4 this should be adressed.
Dont have the exact time right now, but its reload speed is ludicrously fast compared to other guns.
Keep in mind that Király has only 40 rounds in its magazine while ppd40, ppsh41, Thompson M1928A1 drum have larger magazines so the slightly faster reload of the Kiraly is there to compensate for the difference.
Drum M1928A1 being lowered to BR4 was already passed on to devs, I don’t remember about ppsh41 but ppsh-45 is already BR4 so its a matter of time really.