Fix the PPSh's recoil to be like the real one, also add select fire like the real one has.
"The PPSh is a select fire weapon, and can be fired in a semi-automatic mode by toggling the position of a selector switch beneath the trigger guard, next to the trigger."
PPSh-41 - YouTube
"The PPSh is a select fire weapon, and can be fired in a semi-automatic mode by toggling the position of a selector switch beneath the trigger guard, next to the trigger."
PPSh-41 - YouTube