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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
Installation: No soldering required
Removable CNC brass slider for fine hop adjustment
Platform Compatibility: M4 / M16 / AR15 AEG & HPA platforms
making it ideal for high-performance
Model Number: CL25
RetroArms AEG Spring SiCr with Progressive Winding – M140 Cylinders Installation: No soldering requiredThe RetroArms AEG Spring SiCr M140 is a heavy duty upgrade spring engineered for high powered AEG builds requiring maximum performance and consistency. Manufactured from Silicon Chromium (SiCr) spring steel, it offers exceptional durability, resistance to deformation, and long lasting elasticity under intense mechanical stress. Its progressive winding design starts with a lighter compression rate and increases toward the end of the cycle, reducing