Bisley Yellow Accelerator No.3 Airgun Mainspring
S3333
- World's No.1 square-section airgun mainspring for improved compression and consistency
- Molybdenum and PTFE treatment reduces friction for longer service life and crisper action
- Up to 40% more compressed poundage than conventional round-wire mainsprings
- Confirmed fits: BSA Superstar (12 ft/lb only) and Webley air rifles (all models)
- May take rifles above 12 ft/lb — verify legal power limit before fitting
- Genuine Bisley component for spring-piston air rifles
The Bisley Yellow Accelerator No.3 is the world's number one square-section airgun mainspring, treated with molybdenum and PTFE for smoother compression and up to 40% more compressed poundage than a conventional round-wire mainspring. The square-section coil fills the spring guide more completely, reducing lateral movement during the power stroke and improving shot-to-shot consistency. The molybdenum and PTFE coating lowers friction against the spring guide and piston, extending service life and giving the action a crisper feel once bedded in. Note that this spring may take certain rifles above 12 ft/lb — check your local regulations before fitting. The No.3 is confirmed to fit the BSA Superstar (12 ft/lb version only) and Webley air rifles (all models); always verify compatibility with your specific rifle before purchase.
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On all UK stock
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On orders over £50 (Within the UK)
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Return your item within 365 days and we’ll either refund you or replace the item.
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