M100

Oil Quenched/Tempered Si-Cr Alloy Steel Wire. Not for Tokyo Marui PSG-1. Progressive (nonlinear) winding gives lower resist at the first phase of pressing, but spring keeps the same power.

∙ M100 spring
∙ manufacturer: WE

GUARDER M100 Spring ONLY for PSG USESpring is the basic part of the airsoft gun. It is part which notably affecting shooting range. This spring is made of tempered SiCr alloy steel wire. Progressive (nonlinear) winding gives lower…

FPS test on Tokyo Marui MC51 for Prometheus Non-Liner Spring (MS100):
Spring MS100 ---------- 340 - 350 fps