SHS Aluminum Air Seal Nozzle for AK AEG Series (Long Type)
Aluminum Construction
Inner O-Ring for better sealing
This Oil Lubricated Air Seal Nozzle increase the air tightness of the cylinder
Suitable For AK Series Airsoft Electric Gun AEG Rifle

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