User blog comment:KATANAGOD/CoD Wiki News - November 16th, 2014/@comment-2163805-20141116105654/@comment-3967954-20141116185550

There was no War Machine in MW2. Not sure what you're talking about there.

I've played MW2 fairly recently and I never saw anyone using the AA-12, because it's honestly a bit shit. Short range and very little ammo.