MG4

The Heckler & Koch MG4 (MG4 in-gam) is a Belt-Fed LMG. It is a mid range weapon with a very big magazine.

Pros
The MG4 is able to fire when your enemies are reloading and keep fights long with its big magazine size. It is also easier to break destructible objects with its high magazine size.

Cons
The MG4 is inferior to ARs in many ways. It probably has less range, more spread,and less damage per shot. For long range battles, this is not good.