RetroArms AEG Spring SiCr with Progressive Winding – M190 Delayer Chips providing smoother operation and longer

providing smoother operation and longer lifespan

or trigger board before installation

the MSG is optimized for modern speedsoft setups and integrates seamlessly with HPA-powered builds

the 18:1 set is ideal for DMR setups

and RetroArms’ signature QSC (Quick Spring Change) system — allowing you to swap your mainspring without disassembling the gearbox entirely

RetroArms AEG Spring SiCr with Progressive Winding – M190 Delayer Chips providing smoother operation and longerThe 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