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SHS - Upgrade Spring M140 (430~450fps)

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SHS - Upgrade Spring M140 (430~450fps)

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Upgrade your AEG's fps to 430 ~450fps.  It is highly recommened to upgrade plastic bushing and spring guide to metal bushings and spring guide with this product.  Also, it is recommended to upgrade plastic pistons to polycarbonate piston; plastic piston heads to duracon piston heads; and standard gear to reinforced steel gears.  Upgrade battery to lipo and standard gearbox shell to reinforced gearbox shell to have the best result.



  • Material: Piano wire
  • Gross weight: 20g
  • Color: Silver
  • Qty: 1pc M140

Please Note: 

  • Professional installation is recommended. Improper use or installation of upgrade parts are 99% of the time the cause of failures of these items.
  • Please thoroughly inspect any parts for defects before attempting installation. Due to the high possibility of damage from improper installation, we will not warranty parts after attempting installation.
  • Package contents included by the manufacturer may vary

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SHS - Upgrade Spring M140 (430~450fps)