I have tested both weapons in the battlefield and it seems that the MKV have a more random horizontal recoil. Is just me? or it is supose to be as accurate as the 7PDW?
The MKV fires a bit faster, so even if they are identical in every other way, the MKV would have worse recoil due to the rate of fire alone. (I would assume)
MKV has higher RoF and stock suppressor. If it wasn't worse in other aspects it'd be OP by comparison to the PDW.