SHS REINFORCED PISTON for TOKYO MARUI NEXT-GEN AEG M4/HK416

It is a standard SHS reinforced piston for Tokyo Marui’s next-generation AEG M4/HK416/HK417.

This piston is a standard piston adopted by ORGA when customizing the next-generation AEG. This latest version is even more durable and is a highly anticipated product.

Compatible models

Tokyo Marui next-generation AEG M4 series/HK416 series/HK417

Cautions

Since this piston has a small pawl that fixes the rack gear, it may come off the piston body and be damaged when using a high-rate spring.
As a countermeasure, we recommend that the rack gear be removed from the piston and bonded with an adhesive that is resistant to impact and can be used for various purposes.

When locking just before being released from the sector gear, the symptoms may be resolved by fixing the buffer tube after rotating it once.

The role of the piston

The piston is one of the most important parts of the AEG. It is one of the parts for releasing air.
The mechanism of the parts is that the piston moves backwards when the sector gear meshes with the spur gear at the bottom of the piston.
The retracted piston is released when the teeth of the sector gear are gone and moves forward at high speed due to the repulsive force of the mainspring in the piston.
The air in the cylinder is released from the cylinder head nozzle while being compressed by the piston head attached to the tip. Not only the shape and dimensional accuracy of the spur gear are poor, but it may also cause abnormal noise or damage.

Lineup of typical piston gear numbers

-15Teeth Piston
It is a standard piston with 15 rack gears(not including the last tooth).

-14Teeth Piston
This type has no second tooth from the end of the 15Teeth Piston.
It has the effect of preventing a crash that occurs when the piston gear and sector gear collide when the timing at which the piston returns.
It was developed as a countermeasure against piston crashes and was used mainly for high-cycle custom before.
Currently, it is used for various customs because there is no problem with standard customs and high compression customs such as high-power setting as well as high-cycle customs.

-19Teeth Piston
It is compatible with long cylinders such as SR25 and L85.
There are 19 rack gears(the last tooth is included).

Piston gear shape

-Full-tooth type
It is a standard piston used in various AEG.

-Half-tooth type
Compared to the full-tooth type, the gear width is about half and there is no left side in the direction of travel.
Use this type of piston when using a 32:1 gear.
The Tokyo Marui next-generation AEG also uses this type of piston.

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