RED PS3 R2 L2 R1 L1 Controller Trigger Pair w/ Built in Trigger Stops for FPS Games Built in trigger stops improve FPS performance Decreases the time it takes to depress trigger Demo video: http://www.youtube.com/watch?v=4NnUHjT5bq4 Install video: http://www.youtube.com/watch?v=dsk8-Cg8nAE Installation required (must open up controller to install)