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The RetroArms CNC Hop-Up Chamber for AK AEG is a premium upgrade part designed to deliver maximum precision
making it ideal for high-performance
Platform Compatibility: M4 / M16 / AR15 AEG & HPA platforms
FOC drive system for stable
Removable CNC brass slider for fine hop adjustment
RetroArms AEG Spring SiCr with Progressive Winding – M140 Cylinders The RetroArms CNC Hop-Up ChamberThe 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