Special PS3 Controller?

[coffeevol]

I have buddies that play COD and they were talking about a special controller that is kind of like a computer mouse but it helps you turn and lock on the enemy quicker. Do any of you know what they were talking about and if so does it help? Thought I would ask the experts.

 

[DrRosenRosen]

They aren't exactly cheap.

Search for "The Xecuter XFRAG 360"

More expensive options: search "XIM360"

 

[BCSsucks]

maybe this?
Amazon.com: PS3 FragFX Controller V.2 SE: Playstation 3: Video Games