ZCI Aluminium Cylinder Head w/O-RIng

£8.95

Anodised CNC aluminium construction, stronger than polymer
Double O-ring for a positive cylinder seal and air retention
Soft rubber shock pad cushions the piston at end of stroke
Fits standard Version 2 and Version 3 AEG gearboxes
Reduces gearbox shock to help protect your internals
Ideal partner for a matching piston head and nozzle

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Description
Specification

ZCI CNC aluminium cylinder head

The cylinder head sits at the front of the cylinder and seals the air on its way to the nozzle. This ZCI head is machined from anodised CNC aluminium with a double O-ring for a positive cylinder seal, a stronger and more reliable upgrade over a worn polymer original.

Double O-ring seal and shock pad

Two O-rings around the body close the gap between the cylinder and head to maximise air retention and efficiency. A soft rubber shock pad on the face cushions the piston at the end of its stroke, reducing gearbox shock and helping protect your internals.

Fitment and compatibility

It is designed to fit standard Version 2 and Version 3 AEG gearboxes, which covers most M4, AK and MP5 style electric guns. Pair it with a matching piston head and nozzle for a complete top-end refresh. Explore more airsoft accessories.

Installation

Seat the head squarely and check nozzle length and air seal after fitting. If you would rather leave it to a technician, our Kent repair service can rebuild your gearbox for you.

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

General
Brand	ZCI
Other
Type	AEG cylinder head
Sealing	Double O-ring
Material	Anodised CNC aluminium
Shock absorption	Soft rubber shock pad
Gearbox compatibility	Version 2 / Version 3 AEG
Part reference	M-52A
Fitment	Drop-in replacement
Pairs with	Standard AEG cylinders, pistons and nozzles
Legal status	Internal part, no FPS restriction
Finish	Anodised

Recommended upgrades & accessories

Frequently asked questions

What gearboxes is this cylinder head for?

It is designed to fit standard Version 2 and Version 3 AEG gearboxes, which covers most M4, AK and MP5 style electric guns. Check your existing head before fitting.

Why choose aluminium over the plastic original?

CNC aluminium is far more robust than a polymer head and holds tighter tolerances, so the O-ring seal stays reliable under repeated firing and heat.

What is the rubber pad for?

The soft rubber shock pad on the face cushions the piston at the end of its stroke, absorbing impact to reduce gearbox shock and help protect your internals.

Do the two O-rings improve performance?

Yes. Two O-rings close the gap between the cylinder and head to maximise air retention and efficiency, which improves compression and consistency.

Is a UKARA or age check needed?

No. This is an internal spare part rather than a firearm, so there is no UKARA requirement and no age restriction to buy it.

ZCI Aluminium Cylinder Head w/O-RIng

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