SHS full 14 steel teeth piston for Ver.2 / 3 Gearbox

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Style: steel teeth piston
Type: 14 steel teeth
Version: Ver.2 / 3
Use: GEL BLASTER and Airsoft G&P CA Marui ARES ICS G&G AEG Series
Suitable spring: M90-M190

Can improve durability, efficiency and reliability. It can reduce speed, but the initial speed per gun (FPS) increased dramatically. This is an important part of upgrading your gearbox