I don't get ammo and armor balance
So at lvl 2 ARK I get ammo 5.56 - M865 which basically negates all lvl 3 armors and require 2/3 shots to kill but to beat lvl 4 armor, I need 12/14 shots to the chest (teseted on shooting range). The difference in required shots to kill is gigantic! Just one level higher in ammo and from 12/14 required shots, it again drops down to 2/3 againts lvl 4 armor and so on.
It basically makes low/med penetration ammo uselles as it is way better to buy HP with zero pen and go for the legs. This is really werid balance....