PDW is way too high (since it got nerfed to s***), and switch the Skorpion and MP7 around.
LMGS: 1. MK48 2. LSAT 3. HAMR 4. QBB LSW
Best one yet, but I might actually say the MK and LSAT are tied at the top. The LSAT kills more reliably with its higher rate of fire, but the MK's awesome penetration ability makes it hard to bump down.