Rather than editing the stats of certain groups of firearms, why not completely rework certain guns to make them easier to use?
Glock 18c always has been and forever will be stuck in a state of redundancy due to its recoil, despite having a compensator literally built into it.
(I know this is airsoft, but its hard to find a picture of an actual glock 18c since about 1000 exist and only in the hands of western counter terror groups)
The cutaway on top of the gun, plus the fluting of the barrel, is to reduce muzzle climb by venting the gas out the top of the gun and countering the natural climb of the muzzle. It should equal to using an MP5K without a stock. Fuck, even the Glock 17 has less recoil than the Glock 18c does on semi. Increase its spread since its
Mac 11 is a tricky one imo, I feel as though the Mac 11 is somewhat fine with having high recoil due to its fire rate, but at the same time I believe its the weakest SMG, so maybe an ever so slight decrease in recoil is in order?
Typically a pistol shouldn't retain accuracy at longer ranges with a few exceptions. Revolvers should be kept as is because they're slow to fire and realistically because of the design of a revolver, the round fires with more pressure as it needs no kinetic energy to cycle a round. Semi automatic handguns on the other hand should have a
slight spread increase but only in a way that would be noticeable from about the distance between the top of shady street to the entrance to slums.
It doesn't matter what gun it is, if it takes sniper ammo, it should retain 100% accuracy when used with a scope. I believe its already like this but I noticed when I grinded my rifle marks from 75 to 81, the L115A3 was
slightly off target, when I aimed at the centre of the red mark, It hit the edges of the red mark occasionally. Now, this probably wouldn't matter in combat but its just an observation of mine.
Maybe the G3A3 could be an exception but at the same time I wouldn't make it an exception to this unless its full auto spray time.
There's rifles out there, such as the Sig 550, the AUG, and the Famas, that no one in there right mind are ever gonna use more than once because they're just inferior to other rifles of the same and bigger calibres.
Tl;DR: Alongside adjusting the marksmanship overall to change recoil, there needs to be more work done to make sure each individual gun is decent enough for use in 1 way or another.