Modify - Tokyo Marui A.E.G. Irregular-Pitch Spring - S 90+

Modify Tokyo Marui A.E.G. Irregular-Pitch Spring - S90+

- Finely manufactured from A class piano wire
- Very durable and strong
- Irregular pitch coiling for enhanced performance
- Very Consistent FPS
- Easy to install
- Every spring has gone through vigorous and quality tests from the moment a new design leaves the software drawing through to final mass production