Why use the ISO 45 in MW3?
With a little elbow grease, we can easily maximise its potential with the following attachments.
You’ll also see boosts in aiming idle sway and recoil control.

ADS speed will suffer as a result, but we’ll work on that with our other attachments.
Best ISO 45 class setup: Secondary weapon
ISO Hemlock or MCW.
For your secondary weapon, you’ll need something with a little more scope.

We’ve opted for the deadly combo of the opponent-confusingFlash Grenadefollowed up with the damage-dealingSemtexfor ourTacticalandLethalchoices.
If you want to go big, however, theStrikeris arguably thebest SMGin the entire game.
That’s all things ISO 45 for now.