Switching over to the SMG class for our Medic friends out there, the current meta is basically unanimous in crowning the MP7 the best in its class. Yes, it is an SMG so it will only do 25 damage, but the fire rate of 950 is only where things start to get good. Its accuracy rating...
Also, playing with your squad is the best way to earn yourself Squad Points to spend on things like deployable cover or supply drops. Only reload when necessary This is going to be a very tough habit to break for most FPS veterans but resist the urge to reload your gun after every fight...