Guarder AEG Spring

This manufacturing process significantly increases the spring's resistance to fatigue and deformation. It ensures the spring maintains its tension rating over thousands of cycles, preventing the FPS drop often seen with lower-quality stock springs.

These springs are designed for Marui-spec gearboxes, which is the industry standard for most AEGs. If your rifle follows the standard Tokyo Marui design, this will be a direct drop-in replacement.

Selecting a spring depends on your target FPS and your current internal setup, such as your cylinder volume and barrel length. It is best to consult your local field's velocity limits first, then choose a spring rating that accounts for the compression efficiency of your specific gearbox.

If you are moving to a significantly higher tension spring, you should ensure your piston, piston head, and gears are durable enough to handle the increased stress. Installing a high-tension spring in a stock gearbox without reinforcing other components can lead to premature wear or mechanical failure.

Yes, these springs are fully compatible with quick-change spring systems. Their standard dimensions allow them to seat properly in the spring guide and piston assembly of most modern quick-change gearboxes.