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MadBull Non-Linear Spring Upgrade M120 ( 380 to 410 FPS) for Metal AEG Gearboxes
MadBull Non-Linear Spring Upgrade M120 ( 380 to 410 FPS) for Metal AEG Gearboxes

Price: $13.50
On Sale: $10.76
You save $2.74!

Availability:: Usually Ships in 24 to 48 Hours
Product Code: MB-SP120



  • FPS Rating: 380 to 410 FPS w/ .20g
  • For Use With AEG Airsoft Guns w/ Metal Gearboxes
  • Variable Pitch Spring Non-Linear
  • Mathematically Calculated Design for Best Consistency
  • Tested and Rated for over 100000 shots
  • Color Coating Protects from Environmental Wear and Tear
  • Made From Super High Grade German Piano Wire

The Madbull Non-Linear M120 Upgrade Power Spring is made from high quality German piano wire and tested to withstand over 100000 shots without losing power. The non-linear design allows for consistent FPS over the life of the spring compared to traditional style airsoft springs. It is highly recommended that you also upgrade to metal bearings, metal spring guide, polycarbonate piston and other components as needed when using this spring to prevent malfunction and damage to your gearbox.

Warning: We at AirRattle.com recommend all upgrade / repair parts are installed by a professional as additional upgrades and/or custom fitting may be required. It is the responsibility of the customer to ensure the part is compatible with their gun prior to purchase. We are not responsible for any damage caused during or after installation and are installed at customerís discretion.
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Average Customer Review: Average Customer Review: 3 of 5 3 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
3 of 5 ok August 5, 2015
Reviewer: chris ayers from Lancaster, PA United States  
Parts is great. Customer service junk

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