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I received the delivery quickly and well.
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New black material achieves twice the durability and precision (compared to our previous model).
This is a 0.9J spring specifically for the HC (High Cycle) series.
This spring is extremely resistant to fatigue!!
●Minimal burden on gears and gearbox.
●Ultra high-performance spring with almost no fatigue!
●Significantly increased muzzle velocity and range!
●Ultimate irregular pitch! Both ends are carefully polished.
*Approximate muzzle velocity: 90m/s to 95m/s (when using 0.2g BBs)
(Specifications: Measured with 0.2g BBs using genuine inner barrel, genuine piston, and genuine cylinder)
*This spring is exclusively for HC (High Cycle) models; please adhere to this strictly.
★There are three types depending on barrel length: L, S, and SS.
★For M4 CRW, Steyr, PS90, use L
★For MP5, AK47, G3 SAS, use S
★For MP5K , use SS
*The SS spring can also be used when customizing standard electric guns for high-speed operation.
(Compatible with sector gears with 1 to 4 teeth cut)
I received the delivery quickly and well.


