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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
Perfect for advanced tech builds
included or sold separately based on batch)
rail screws
The MAXX Model CNC Hardened Stainless Steel Cylinder Type D (250-300mm) is precision-engineered to provide optimal air volume
1x RetroArms Selector Plate V2 (AR15)
RetroArms SR25 Spring SiCr with Progressive Winding — M140 Gearboxes Perfect for advanced tech buildsThe RetroArms SR25 Spring SiCr with Progressive Winding M140 is a high performance main spring designed for SR25 and extended gearbox builds that require powerful and consistent compression. Manufactured from silicon chromium (SiCr) alloy steel, this spring offers superior resilience, reduced fatigue, and long term stability compared to standard carbon steel springs. The progressive winding design ensures smoother compression, reducing stress on the