Spring Set

∙ For: M4/M16 type replica
∙ Made of: metal
∙ Manufacturer: Madbull

POLARSTAR Heavy Nozzle/Poppet Spring for Kythera/FE/F2The heavy spring is what comes standard in Fusion Engine and F2 HPA systems.
It is also the "extra" spring that comes with the Kythera system.

Gearbox Spring Set for Ver. II / III G&G

Established in 1986 in Taiwan, G&G is an experienced designer and producer of airsoft replicas and accessories. From their first replica, their goal is innovation and high quality to meets…

Gearbox Spring Set for Ver. II / III G&G

Established in 1986 in Taiwan, G&G is an experienced designer and producer of airsoft replicas and accessories. From their first replica, their goal is innovation and high quality to meets…

Set includes:
- Tappet plate spring
- V2 Safety cover spring
- V2 Cut off lever spring
- V3 Cut off lever spring
- Switch unit spring

POLARSTAR Light Nozzle/Poppet Spring for Kythera/FE/F2The Light Spring replaces the Standard (Heavy) Spring which comes in the Fusion Engine and F2 HPA systems.
The Light Spring is used to help equal the force balance to improve…

Looking to get a little more "ooph" out of your MRS regulator? Well then you are in luck since this beefy spring will do just that. Changing out the spring can be done in a matter of minutes and will safely increase the output of…