Real Action Paintball (RAP4) Velocity Adjustment 5 Spring Kit

If your marker is chronoing too low or too high, the Rap4 Velocity spring kit will have the right spring to make your gun chrono correctly. The kit comes with five different colored springs; each color represents a different tension. These springs work with all Tippmann 98's, U.S. Army markers, Tippmann A5's and original X7's. Not compatible with x7 Phenom.