Guarder Aluminum Enhanced Hop-Up Chamber for Tokyo Marui Model 17 Gen 4 GBB Pistol Airsoft Guns

Guarder Aluminum Enhanced Hop-Up Chamber for Tokyo Marui Model 17 Gen 4 GBB Pistol Airsoft Guns Aluminum Construction ( Hard Anodic Coating) Design For Replace the Original Parts Suitable For Tokyo Marui Model 17 Gen 4 GBB Pistol Airsoft Guns