Maybe there was already such a topic, but it would be really nice to implement such an upgrade.P90 got magazine for 24 bullets= 2 bursts.If we add craftable upgrade and raise it up to 36 (common is 50)= 3 bursts and it would be nice competitor to miniguns builds (yes I talk about pvp).I remember its possible to make about 90 dmg with ap bullets (2 bonus ranged dmg perk) with this gun.ofc it has got much lower range, however you need low SG skill for it and then spend other skill points into FA and DOC and secondly serve as medic.My suggestion would just open another not overpowered build= another way how to play FOnline. I guess it wouldnt be too hard to implement it too.
If you want to make enemies, try to change something.