[RETRO ARMS] Piston for 16T sector gear

Nylon + fiber injection molded body with spring steel (56SiCr7) rack gear
This is a high-strength piston that combines

Compatible with Φ15mm standard electric gun springs,
The weight is 16.97g.

The compatible sector gear has 16 teeth.
The second rack gear is fully cut from the beginning, and the third is half cut.
It has rebound countermeasures and AOE adjustment margins for high-speed cycling. It can also be used with DSG.



This piston is offset by approximately 0.5 mm from the center of the piston to the center of the inner part where the spring is inserted.
Although we have succeeded in increasing the thickness of the rack gear mounting part,
The thrust bearing hits the inner wall and cannot rotate, so it simply acts as a bulking spacer.
(It is sufficient to remove the twist on the spring guide side only.)


For this reason, there is a step on the rear inside of the piston to avoid the thrust bearing of the spring guide.
This step is the thickness of the rack gear mounting area.



When using this piston, please note that the spring with a thin wire diameter should be
There is a possibility that it may protrude from the spring guide.
If that happens, the piston will get stuck and crash when it moves back.
Adjust the diameter of the end coil to prevent it from protruding.