GunsModify CNC Steel Hammer Housing for Marui G17 GBB (CO2 Ready)

GunsModify CNC Steel Hammer Housing for Marui G17 GBB (CO2 Ready) CNC Steel Construction Complete Hammer Unit for Marui G17 Series Airsoft Gas Blow Back GBB Pistol As always, upgrading Airsoft Gun require necessary skill & technique to dissemble the gun, consult expertise if needed