This spring is an M150SP power spring. Velocity will vary depending on quality, age, and configuration of internal components. This is a very high powered spring.
SHS is one of the leading manufactures of aftermarket parts in airsoft.
This is an upgrade piano wire spring. The non-linear design stabilizes the velocity and puts less stress on the motor & gears, conserving battery life.
This spring is an M150SP power spring. Velocity will vary depending on quality, age, and configuration of internal components. This is a very high powered spring.
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