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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
or premium custom projects
Model Number: ASV2
Constructed from glass fiber-reinforced (GF) technopolymer
reliable BB feeding
Material: Stainless Steel (shaft)
RetroArms SR25 Spring SiCr with Progressive Winding — M140 Trigger Guards or premium custom projectsThe 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
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