Gearbox Parts

Prometheus Non-linear Spring MS110
$13.00
Upgrades the FPS of your AEG from approximately 350 FPS to 380 FPS
Prometheus Non-linear Spring MS135
$15.00
Upgrades the FPS of your AEG from approximately 420 FPS to 440 FPS
Valken M100 Spring
$15.00
High quality Airsoft replacement part
~360-380 FPS
FPS may vary depending on barrel length and bore.
Prometheus EG Spring Guide/Smoother V2&8
$22.00
Rotating “Tornado Shaft” provides a smooth surface
Decreases the force be pushed against the spring
Made in Japan
Prometheus Non-linear Spring MS120
$14.00
Upgrades the FPS of your AEG from approximately 380 FPS to 410 FPS
Product Material: Metal
Made in Japan
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