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Assembly of A6061-T6 piston head , polymer piston, piston rack(M90-M110)/(M120+).

*Warning: M90-M110 Only fit for M90-M110 spring. higher spring will jeopardize the rack please choose M120+



Best recommendation use on HAO advance one-piece cylinder with minor tolerance and best air-tight! Competible with Systema OEM cylinder. Other third-party cylinder don't recommend.

Piston Assembly

SKU: O11
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    All the products are made and design for Airsoft use. Any modification of structure, exterior, appearance or painting, marking or wiping the cover/instruction on the merchandise may lead to violate your nation's law regulation. Customers shall bear the full legal liability after the modification.


    • 6061-T6 CNC turned piston head
    • S45C carbon steel rack (Only fit for M90-M110)
    • Polymer injected Piston (HAO's Yellow)
    • Sealing Oring 
    • Nozzle Catch Oring
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