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Guarder Full Teeth Piston for Marui AEG Series

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Strength where it matters

The Guarder Full Teeth Piston pairs a lightweight polycarbonate body with a thermal-treated steel last tooth, the single most important tooth in the whole cycle. That last tooth carries the peak load as the piston releases, so reinforcing it with hardened steel dramatically reduces the risk of stripping in higher-stress builds.

Light, fast and reliable

Keeping the main body in polycarbonate holds weight down, which helps rate of fire and reduces stress on the rest of the gearbox. Grease grooves cut into the rail guides keep the piston lubricated as it runs, smoothing the cycle and extending service life.

Fits your gearbox

Designed for most Tokyo Marui spec AEG gearboxes, it drops into the common version 2 and version 3 platforms found across countless replicas. The reinforced construction stands up to rapid and prolonged firing, making it a dependable base for a serious build.

Fit it right

The piston head is sold separately so you can tailor the setup, and we strongly recommend fitting by a qualified technician to protect your warranty. Explore more internals in our airsoft accessories range, or book our Kent Tech-It fitting service.

General
BrandGuarder
ColourBlack
Other
TypeAEG piston (full teeth)
Body materialPolycarbonate
Last toothSteel, thermal treated
Tooth hardnessApprox 55 HRC
CompatibilityMost Tokyo Marui spec AEG gearboxes (V2/V3)
LubricationGrease grooves on rail guides
Piston headSold separately
Spring ratingSuited to builds up to around M160

Frequently asked questions

Does this piston come with a piston head?

No. The piston head is sold separately, which lets you pair it with the exact head and porting your build needs.

Why does it have a steel last tooth?

The last tooth takes the most stress at the point of release. A thermal-treated steel tooth resists shearing far better than an all-polymer piston, improving reliability in higher-stress builds.

Which gearboxes does it fit?

It fits most Tokyo Marui spec AEG gearboxes, covering common version 2 and version 3 setups used across a huge range of replicas.

What spring can I run with it?

The reinforced design is suited to mainstream high-speed and higher-power builds, holding up well with springs up to around the M160 range when correctly installed.

Can I fit it myself?

We recommend it is fitted by an experienced or qualified technician. Incorrect installation can damage the part or gearbox and is not covered by warranty. Our Tech-It service can fit it for you.