Metal Construction.Replacement Cyliner Unit for WE KATANA M4 AEG Series.Ready to go for between 400 - 450 FPS with this cylinder installed in WE KATANA M4 AEG.Suitable for WE KATANA M4 AEG Series only.Please ONLY use with High Torque Motor after changing this cylinder unit.Color : GreyBuild: MetalSize: 170mmWeight with Box(gram) : 198Manufacturer :WE
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