The long curve trigger has an extended trigger shoe.
2011 Trigger, STI - Long Curve
This trigger fits only 2011 style STI/SV guns. Use the long curve trigger if you need a little more length in the trigger shoe. The trigger bow is stainless steel wire EDM cut with a notch for trigger take up adjustment. The trigger shoe is glass filled nylon polymer with a set screw for overtravel adjustment.
If you really want to be slick, choose a colored trigger (gray, blue, or red) that matches your grip or other gear. Afterall, if you look good, you'll shoot good (maybe).