3x Stun (or Flash if u want but i like stun better)
Stopping Power
Extreme Conditioning
Its good cause you can run fast with extreme conditioning and make use of stuns/flashes to kill oponents easily. With stopping power you can still kill people easily aslong as you can aim well with the iron sights. I choose a silencer cause it helps to keep you hidden so you can take out enemys without others noticing and I think it reduces recoil which is good.