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Rough guide to springs

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These will vary depending on what manufacturer you go for and what you're putting it in, but here is a rough guide as to how they should convert.

1J ~ 328fps

M85 ~ 279fps
M90 ~ 295fps
M100 ~ 328fps
M110 ~ 360fps
M120 ~ 394fps
M130 ~ 427fps
M140 ~ 459fps
M150 ~ 492fps
M160 ~ 525fps

Please consider using our Airsoft App's 'Spring Suggestor':

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