I just got the game and chose to main the R870. Love it. Granted I used the default shotgun to get to it and its quite good. I have used the mp7 which I find good. I have used the first Rifle you get and its good. I have used the first 3 round burst and its so so. I have used the first LMG and it sucks. Snipers seem like they are very good.
To this day.... we still dont know...... WHO LET THE DOGS OUT?!?