I think that you should make the HK417 more accurate, because of it's slower fire rate, but don't change the fire rate. That makes it awesome.
It is more accurate if you wait between shots.
I think you should,
Make firing rate faster while using iron sights (Its faster when your not)
Mate it more accurate
More clip size
I know about the speed difference for the iron sights, I did that so it's easier to have more accurate shots.
It is more accurate if you don't speed burst your shots, I will make it more accurate though, since the real weapon is.
Clip size is perfect, in my opinion.