This gearbox has an unique shell, spring guide, selector plate, cut-off lever and trigger, all other parts are compatible with regular AEG Ver.2 6mm MP5 gearboxes.
2pcs 6mm ball bearings, 4pcs metal bushings.
Replaces all major brand M4 standard gearbox.
Version 2 gearbox with front wire.
Easy power upgrade system.
Quick release spring and spring guide for easy power adjustment / spring replacement.
Micro switch operation for shorter & better electric range.
Faster trigger response design.
Full metal reinforced chassis / gearbox with metal gear set.
Transformer gearbox will work with most AEG MP5 Platforms (Modification may be required)