Essential part for upgrading your airsoft AEG.Package included 6 Steel Bearing Bushing .To build a tight & durable gearbox.Design for high-speed operation & heavy load.Prevent cling by burning.For most 4mm gearbox version.Replace the standard Bearing Bushing of Gearbox.Upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed Build: SteelDiameter: 4mm Weight with Package: 14gManufacturer : Army Force
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