User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-5959516-20110501211838/@comment-1889554-20110505000943

It's based off of the CAR-15 "Commando", however, is definitely not the same gun.

I guess you could say it's heavily customized, but there's no weapon EXACTLY like it.