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- Steel material. MIM injection molding /Super hard /Steel
- Appearance is heat treated and black dyed to lower the chance of getting broken.
- Compatible with 90% gear boxes of AEGs in the market. Sutible for 80-200 m/s with 0.2g BB.
- Tested with special M200 spring, the gear still works normally and no damage trace after 10000 shots.
