Description

《product description》
For VSR-10.Set the Vacuum-system into head,so erase the negative pressure when firing.
Head is the intake air type.When piston go ahead,the O-ring is spreaded that the air flow in the head.There is no clearance for Cylinder,that’s why it keeps airtight.

The features
1.Flying distance is UP
2.Some Materials….Head & Body(Aluminum alloy) / End ring (POM) / End (Stainless)
3. Inner Diameter is about 13.5mm

If use this piston , would be available for PDI-SPRING(SS,SPR,SPR-V),
Normal Spring Guide is not abailable.Please take 9mm SPRING GUIDE.
Caution:
This piston is made for PDI-Precision cylinder.

※If use this piston to extreme power spring as PDI SS,SPR & over 2J setting,it’s possible to be shorter life.
Because those sprigns gives extreme power over Toy. It’s up to your operation & maintenance.
PDI-original,Vacuum system
Vacuum system is to let fly at BB more farther and go straight.
This system erase the negative pressure when shooting.The system is inside the head.
1.Conventionally,the valve is free in the system.(This is not air sealing)
2.When shooting,the piston go ahead.At that time,The valve closed & start to keep air sealing.
3.As well as the piston bump against the cylinder head,the valve come off.
4.The air flows toward top from rear.This cancel the negative pressure.

* Our piston design was changed in January 2021 due to an revision.
Design changed
・ Piston head design changed
・ Piston body design changed
・ There is no difference in the materials used.
・ Although there hes been design changes, it has been confirmed by tests that the FPS is the same as the previous design.

《SPEC》
■Usable gun：Tokyo Marui VSR-10