I agree they nerfed these guns the wrong way, should have reduced the effectiveness at range not the close range damage.
But, i have no problem understanding why they would nerf the M5A3 and MP9 when they are already nerfing the K30. These guns perform so similar on paper it would be like nerfing the Condor and doing nothing about the Hind.
Mp9(200.222ms) and K30(200.169ms) ttk difference is a fraction of a ms. MP9 have better accuracy and less recoil when you ADS. K30 is better when you hip fire.
M5A3 with short barrel and close combat ammo was a beast. It killed faster(195ms) with more accuracy and less recoil while ADS.
I would not be so salty about this nerf, if the close combat ammo on my M5A3 wassn't locked due to a bug and the fantastic people at EA support sorted it out in only 7 months, just in time so i could enjoy the gun for 2 weeks before these MOTHERfathers nerfed the thing.
PBX is looking good right now.