Pirani molla TOP 90
PIRANI SPRING TOP 90
Springs made in Italy, with ground and self-centering support surface, spring force identification color. Anti-corrosion treatment, variable pitch spring. Made with pre-hardened steel. The springs were tested on a modified VFC M4 with two bearings, normal stroke, 270mm barrel, exhaust hop up and 0,20gr pellets, giving the values expressed by the spring