All Palo Verde Spring Kits include the highest quality springs with the ends closed and ground flat so the spring sits flat and square. All springs are zinc coated to resist corrosion or are of stainless steel. Nylon bushings maintain spring alignment, reduce friction and provide an easy way to adjust tension without cutting coils from the spring. Different combinations of bushings and adjuster washers produce different spring tensions with about an 8% change in spring tension between settings to fine tune for individual guns and ammo.
Nylon bushings and adjuster washers are color coded for easy installation.