Genuine ASG EVO spring
This is the genuine ASG M95 upgrade spring made for the CZ Scorpion EVO 3 A1. It is manufactured from hardened steel with a bronze finish and is designed to drop straight into the EVO gearbox with no additional adaptation, guaranteeing clean integration with the original internals.
Precise power tuning
The M95 rating delivers approximately 320 fps on 0.20g BBs, around 0.95 joule, placing it in the 0.5 to 1 joule band. That makes it an ideal spring for setting your rifle to a stable, site-legal power level, which is especially useful for CQB fields that enforce strict joule limits. Exact output will vary with barrel length, cylinder volume and air seal.
Wider gearbox compatibility
While it is engineered for the Scorpion EVO 3 A1, this spring is also compatible with standard Version 2 (V2) and Version 3 (V3) gearboxes, so it is a handy tuning spring for a range of AEGs, not just the EVO.
Fitting and chrono
Changing a spring means opening the gearbox, so basic AEG knowledge helps. If you would prefer, our airsoft repair workshop in Kent can fit the spring and chrono the rifle to confirm it is on the limit. Browse more internals in our airsoft accessories range.









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