Another reason to become an average 2D scopes enjoyer.

Nothing can be done about this. There is only one memory point for the machine gun per turret and it cannot be changed. Animation might be a possibility, or a script like with the missiles on the Avenger, but both will most likely result in bullets being "off", and the scripting solution would likely cause some lag.

Ordinary malfunction on milspec m16a2, closing as wontfix :P

I tried with compability mods before. Idk i will try combinations of compability mods. Anyway thx.

Not one compatibility mod was loaded, not for CUP nor RHS

As I said before: Not a CUP issue

Possibly, but the Galil is an AK pattern rifle with an unusual caliber for said pattern, so any such suppressor would not be authentic. For the time being, it won't happen, too much work considering how much else there is to do that take precedence.

Couldn't some sort of suppressor proxy be set up for standard 5.56/7.62 suppressors, akin to the other weapons like G3s and M4s?

No model for the suppressor, no time to create one.
Sorry 'bout that.

Fixed one, two and four.