The RetroArms AEG Spring SiCr M130 is a precision-engineered upgrade spring built for high-performance AEG builds. Constructed from Silicon-Chromium (SiCr) steel, this spring is designed to provide stable FPS output, excellent resilience to fatigue, and long-term durability, even under extreme gearbox stress.
Its progressive winding design allows for smoother compression at the start of the cycle, reducing stress on gears and motor, while delivering full power at the end stroke. Ideal for techs building around M130-rated outputs, typically reaching ~420–450 FPS (depending on setup).
Features
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M130 spring rating – estimated ~420–450 FPS with 0.20g BBs (depending on build)
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Made from high-quality SiCr (Silicon-Chromium) spring steel
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Progressive winding for smoother gear cycling and less mechanical wear
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Excellent fatigue resistance and long-lasting performance
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Ideal for high-power, long-barrel, or outdoor-focused builds
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Manufactured in the Czech Republic by RetroArms
Specifications
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Material: Silicon-Chromium (SiCr) Spring Steel
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Type: AEG Main Spring
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Rating: M130
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Design: Progressive winding
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Compatibility: Most standard AEG gearboxes
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Brand: RetroArms
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Origin: Czech Republic
What’s Included
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1x AEG Spring SiCr M130 (Progressive Winding)
Important Notes
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Actual FPS depends on other internal factors like barrel length, cylinder volume, and compression parts
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M130 springs may require reinforced internals and stronger motors
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Professional installation is strongly recommended
Disclaimer
⚠️ This product is an upgrade part intended for toys only. Not for real firearms.
