Soldato
Heavy barrel and stubby does this. In BF4 spread was actually a thing. IIRC, with the stubby grip, I think the maximum spread of some of these weapons is now less than it's minimum spread!
This also leads to the issue that until you've got the right attachments on the gun and un-learnt everything you knew about shooting in BF4 you are going to get a pasting.
Especially if you run the heavy barrel and vertical grip. The vertical grip basically negates negative impact of the heavy barrel so it's perfect if you tend to move while shooting. Otherwise you can run the stubby. I'm really keen to try out the battle riffles though, the SCAR with the compensator and stubby looks like fun.