My local USPSA match director said Gas pedal was OK for limited... but that was not in speed steel, best to check. Does the normal (non-orange) TS have the frame drilled, or are you going to have that done? I went the nitrofin route - takes the place of the slide stop. Still getting used to it, but I have found if I put a lot of pressure on the pedal, the sight get pushed down and to the right. But, it seems great for light pressure and a consistent place to park your thumb.