GunsModify Aluminum CNC Blow Back Housing for Marui G18C GBB

GunsModify Aluminum CNC Blow Back Housing for Marui G18C GBB CNC Aluminium Construction Design for Replace The Original Blowback Housing Suitable for Tokyo Marui G18C Series Airsoft Gas Blow Black GBB Pistol As always, upgrading GBB require necessary skill & technique, consult expertise if needed