Just to clarify. I had a person email me thinking that act labs light guns are the same as positional guns. Positional guns work similar to a mouse. It moves the cursor as you aim (unlike act labs guns which rely on a snapshot of a specific area of the screen to determine whether or not a hit was scored and cannot move a crosshair as you aim). In other words, positional guns are used in games like t2 ore revolution. act labs guns are used in games like area 51 and lethal enforcer. I'm sure someone else can explain it better than me but rest assured that these are 2 totally different types of light guns.