A important upgrade for your AEG.
Element AEG upgrade Series -Steel gear set with piston.
Use to replace the original gears and take more stability for your AEG.
Come up with Stable Gear set plus full-teeth piston.(ABS Made).
Gear set is the substantial high-cost performance gear set.
Suitable for Element, Systema, Laylax & Tokyo Marui Airsoft AEG piston series.
Best compatible with Element spring M125, M135 and M145.

Note : Upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed.