The Hair Pin Trigger Kit is designed to make any Electronic, Manual, or Responsed Trigger Tippmann A5, X7, or 98 trigger faster and more sensitive than ever before. The kit comes complete with 5 different pin sizes which will allow you to fine tune your trigger and sear positions for maximum performance. The same kit works in all three marker types!!! Overall the pins make any trigger shorter and easier to pull. This makes for less time between shots, and for people using e-grips...less battery use with each shot.