The RetroArms AEG Spring SiCr M190 is a high-tension performance spring designed for the most demanding airsoft builds. Constructed from premium Silicon-Chromium (SiCr) spring steel, this M190-rated spring delivers extreme FPS output, outstanding durability, and resistance to fatigue — even in long-term high-stress conditions.
With its progressive winding design, the spring compresses more smoothly at the start, helping reduce initial gear strain and allowing for more controlled piston movement. Best suited for heavily reinforced DMR or bolt-replacement AEG platforms, this spring is intended for experienced builders using top-tier internal parts.
Features
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M190 spring rating – typically produces ~540–580 FPS with 0.20g BBs (depending on setup)
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Made from SiCr (Silicon-Chromium) steel for long-term resilience and consistency
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Progressive winding improves compression behavior and reduces gearbox stress
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Designed for high-power DMR/sniper-style AEGs with reinforced internals
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Exceptional resistance to fatigue and spring deformation
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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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Rating: M190
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Design: Progressive winding
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Compatibility: Requires reinforced gearbox setup and strong components
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Brand: RetroArms
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Origin: Czech Republic
What’s Included
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1x AEG Spring SiCr M190 (Progressive Winding)
Important Notes
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Not suitable for standard gearboxes
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Requires reinforced piston, cylinder, gears, spring guide, and high-torque motor
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Professional installation and tuning are mandatory to avoid damage
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Typically used for semi-lock DMR builds or bolt-replica conversions
Disclaimer
⚠️ This product is an upgrade part intended for toys only. Not for real firearms.
