Deep Fire Reinforced Gearbox Case Ver 3 Gearbox with 6mm Bearing for AK
Deep Fire Reinforced Version 3 AEG Gearbox with 6mm Bearing
Essential part for upgrading your Airsoft Electric Gun AEG
To build a tight & durable gearbox
6mm bearing Gearbox (Include Bearing)
Gearbox: Version 3
Suiatble For Tokyo Marui AK Series Airsoft AEG Rifle

As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed