CSU SSAs get both guns, yet one of them is just a quieter version of a gun cadets get;
My proposal:
Slightly higher damage (22 body 25 head)
A lot less spread and recoil (since it’s a suppressed gun)
This way the M4 has a slightly better TTK & DPS because of the recoil and higher headshot damage but the MP5 [S] is easier to control, making it good at a distance; this would make the MP5 [S] more unique and not just a remodel of the M4