M90

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.

∙ Supreme Quality Airsoft Electric Gun Spring
∙ Non-Linear Type Spring offer stable performance

Main spring for normal AEG type rifles. Approx. 300fps.

*Actual power will vary from gun to gun and the above fps should be used as a guide.