High-quality SHS 15T piston for airsoft AEG upgrade

SHS 15 tooth piston installed in M4/M16 Version 2 gearbox

SHS 15 Tooth Piston (Full Rack)

£11.95

15 tooth full-rack piston for Version 2 gearboxes
Fits M4, M16 and most standard AEGs
Durable construction for intensive skirmish use
Improves gear engagement for smoother cycling
Crisper semi and full-auto trigger response
Beginner-friendly first internal upgrade

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Why Buy From Platoon Stores

In-House Repair Workshop in Rochester Kent

Kent's Only Authorised 5.11 Tactical Retailer

UKARA Registered Retailer

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Description
Specification

A smart first upgrade

The SHS 15 tooth piston is a well-priced, hard-wearing replacement for Version 2 AEG gearboxes, the type found in M4, M16 and most standard airsoft rifles. It is a sensible first internal upgrade and a reliable component for higher-performance builds alike.

Why it matters

A quality piston improves gear engagement for smoother cycling and crisper semi and full-auto trigger response. It also reduces wear on your gears and helps keep your FPS consistent shot to shot, which is exactly what you want from a dependable skirmish rifle.

Fitment

This is a full-rack 15 tooth piston for Version 2 gearboxes. Please check your gearbox version before ordering, as Version 3 and other designs may use different parts.

Fit it and forget it

Pair it with our other airsoft accessories, or let our Kent repair team fit it as part of a full service.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	SHS
Other
Best for	High-speed and high-torque builds
Part type	Airsoft AEG piston
Tooth configuration	15 tooth (full rack)
Gearbox compatibility	Version 2
Typical platforms	M4, M16 and standard AEGs
Function	Compresses air on each cycle to propel the BB
Install level	Beginner-friendly
Sold as	Single piston
Replaces	Standard or worn AEG piston
Country of origin	China
Condition	New

Recommended upgrades & accessories

Frequently asked questions

Which gearbox does this fit?

It fits Version 2 gearboxes, the type used in M4, M16 and most standard airsoft AEGs. Please check your gearbox version before ordering.

Do I need to be over 18 or UKARA registered?

No. This is an internal spare part, not a complete gun, so no age restriction or UKARA membership applies to the part itself.

Is it a full or half rack?

This is a full-rack 15 tooth piston, meaning all 15 tooth positions are filled for smooth engagement across the cycle.

Will it fit my M4?

Most M4 and M16 style AEGs use a Version 2 gearbox, so this piston is a common fit. Confirm your gearbox version if you are unsure.

Is installation difficult?

It is a beginner-friendly swap for anyone comfortable opening a gearbox. If you would rather not, our Kent repair team can fit it for you.

SHS 15 Tooth Piston (Full Rack)