The ZCI CNC Aluminium Piston Head with Bearings is a straightforward upgrade path away from fragile plastic piston heads. Whether you’re rebuilding a worn gearbox or prepping a new AEG for field duty, this component delivers measurable gains in longevity and cycling consistency.
Key Features
- CNC-machined aluminium construction – precision-engineered for tight tolerances and minimal rocking
- Integrated bearing guidance – reduces friction and wear on the piston rod during firing
- Single o-ring seal – maintains air compression without excessive drag on the cylinder
- Direct plastic head replacement – fits standard V2, V3 and compatible gearboxes with no modification
- Lightweight design – minimal added inertia, preserving motor efficiency
Real-World Use Cases
Skirmishers tackling weekend events benefit most from this upgrade: a reinforced piston head extends service intervals between rebuilds and reduces the risk of mid-game gearbox failure. Milsim players running extended ops appreciate the smoother cycling and predictable performance under sustained fire. Even casual target shooters upgrading ageing AEGs find this part an affordable way to restore reliability without overbuilding the platform.
Technical Specifications
- Material: Aluminium alloy (CNC-machined)
- Seal type: Single o-ring
- Bearing-guided: Yes
- Gearbox compatibility: V2, V3 and variants
- Finish: Natural/anodised (colours may vary)
Compatibility & Upgrades
This piston head suits any AEG with a standard V2 or V3 gearbox. Pairs well with upgraded cylinders, cylinder heads and spring guides for a complete top-end overhaul. Confirm your gearbox version before purchase—compatibility guides are available on request from our support team.
UK Legal & Site Notes
As an internal component, this piston head carries no legal restrictions and is not subject to FPS limits. Fit it to any UK-registered airsoft replica. Always inform your site chronographer of significant upgrades so they can re-chrono your rifle if required.
Upgrade your AEG’s reliability at minimal cost. Order your ZCI piston head today and enjoy smoother, longer-lasting gearbox performance.





