I don't know about this, I seen many players complaining about it, guns damage
Blah blah why XXX gun cost 200k but only deal 9 damage, while YYY gun cost 40k deal 9 damage.

It has come to my mind that gun has too many weapons, so to counter this, why not make everyone's Hp to 100 and x2 all the current weapons.
Example
Before M4 8 damage thus 6 shots to kill
After M4 16 damage thus 6 shot to kill too

Thus more guns can be buffed and nerfed
For example guns can now deal 15 damage which is impossible before