SMG and automatically put the damage is weak (normal)
but the shotgun and rifle are very unbalanced
one has a short range and its damage to be high and was hitting on a minuscule player in the torso 100 hp (shotgun)
and the rifle and the most chosen because:
has high-precision
-range
- If you click 5 times in a row (example) becomes almost a non-stop M14
- Not to mention a double shot = headtshot and their high damage
ammunition for a full-sniper
-and if you make a mod on the gun thing is unbeatable (in mod ironsight)