Tune Up Kit

The tune-up set for AEG AK and M4 is a practical internal upgrade designed to improve air seal, cycle smoothness, and overall consistency of performance. It also helps reduce impact stress and operating noise, making it a solid choice both for replacing worn components and for preventive maintenance.

The set includes a POM piston head, which is lightweight, durable, and supports good sealing together with smooth operation. The silent cylinder head helps absorb piston impact, reducing both noise and wear on internal parts. The kit also includes a cylinder depending on the selected version and a nozzle of the correct length, helping improve BB feeding and sealing between the gearbox and hop-up chamber.

This set is intended for users who want to improve the function of their AEG replica without unnecessarily complex modifications. It is suitable both as a service replacement and as a basic air compression upgrade that can help achieve more stable results and better system efficiency.

Available variants:

AEG AK version

• POM piston head
• silent cylinder head
• cylinder
• 19.8 mm nozzle
• designed for AEG AK

AEG M4 version

• POM piston head
• silent cylinder head
• ported cylinder
• 21.4 mm nozzle
• designed for AEG M4 / V2 gearbox

Installation recommendation:
Before installation, we recommend checking compatibility with your hop-up chamber and gearbox. For proper function, install the parts into a clean system, lightly lubricate the sealing O-rings, and check for smooth movement. If you are not confident with installation, professional fitting is recommended.

Package contents:

• 1× POM piston head
• 1× silent cylinder head
• 1× cylinder / ported cylinder depending on version
• 1× nozzle depending on version