There's a reason the ISO Nightshade keeps showing up in aggressive multiplayer setups. It fires fast, feels light in close fights, and can still challenge rifles when you build it properly. Players who spend time in MW4 Bot Lobbies will quickly notice that the gun rewards clean tracking more than wild spraying. The key is keeping its pace while giving it enough control for longer lanes. Don't build it like a slow rifle. Let it stay an SMG, just a...