Airsoft Internal Parts

Polarstar V2 Fusion Engine
Designed to answer the demands of today's hardcore airsoft player, the patented Fusion Engine is one of the most reliable, high performance airsoft systems available today. No matter if you need a high fire rate CQB setup or a high velocity sniper platfor
Prometheus Non-linear Spring MS135
Upgrades the FPS of your AEG from approximately 420 FPS to 440 FPS
Valken M100 Spring
High quality Airsoft replacement part
~360-380 FPS
FPS may vary depending on barrel length and bore.
Prometheus EG Spring Guide/Smoother V2&8
Rotating “Tornado Shaft” provides a smooth surface
Decreases the force be pushed against the spring
Made in Japan
Prometheus Non-linear Spring MS120
Upgrades the FPS of your AEG from approximately 380 FPS to 410 FPS
Product Material: Metal
Made in Japan
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