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RetroArms CNC POM piston head is a lightweight upgrade part for AEG compression systems, made in the Czech Republic from durable POM-C engineering plastic. Precision CNC machining ensures accurate dimensions, while the low weight helps reduce the mass of the moving piston assembly and suits high-speed AEG builds.

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The RetroArms CNC piston head is designed for building, servicing and upgrading the compression system of AEG airsoft guns. Unlike metal versions, it is made from POM-C engineering plastic, which combines low weight with good mechanical durability. This is particularly useful in builds where you want to avoid unnecessarily increasing the mass of the moving piston and piston head. Precision CNC machining provides accurate dimensions that are important for proper fit and operation within the compression system. The piston head is designed with an emphasis on reliable sealing inside the cylinder, helping to reduce unwanted air loss during firing. The POM-C construction is a suitable choice for standard upgrades as well as high-speed AEG builds where low moving mass provides a practical benefit. As with any piston head, proper fit, sealing and free movement of the entire assembly inside the specific cylinder should be checked during installation.
The piston head is made from durable POM-C, combining low weight with properties suitable for mechanically stressed AEG components.
The polymer construction helps reduce the mass of the moving piston assembly, which is particularly beneficial for builds focused on fast response and higher RoF.
Manufacturing using CNC machining provides accurate dimensions that are important for proper piston head operation within the compression system.
When properly installed, the piston head helps provide a good seal inside the cylinder and reduce air loss during the AEG operating cycle.
The piston head is made in the Czech Republic from POM-C engineering plastic and is designed for servicing and upgrading AEG compression systems.
The main advantage of the POM version is its lower weight. It therefore avoids unnecessarily increasing the mass of the moving piston assembly, which can be particularly beneficial in high-speed AEG builds.
Yes, POM-C is an engineering plastic with good mechanical durability and offers a useful combination of strength and low weight for this type of component.
The low weight of the POM piston head is beneficial for high-speed AEG builds because it helps keep the mass of moving parts low. Suitability for a specific build also depends on the piston, spring, gears, motor and correct gearbox setup.
After installation, check primarily for free movement of the piston assembly and proper sealing of the piston head inside the cylinder. Components from different manufacturers may have different production tolerances.
| Color | White |
| Piston head | Plastic |