Tweaknews.net posted a review on the Zalman FG1000 Gun Mouse FPS Controller
A quote from the article:
>> Zalman FG1000 Gun Mouse FPS Controller Review
This product combines some the best features of gaming mice with a trigger attachment to give a new and unique experience to FPS games. I have to admit, using a trigger instead of a mouse button is a lot of fun and making the transition was not as awkward as I anticipated.
>> Zalman FG1000 Gun Mouse FPS Controller Review