COWCOW Technology Enhanced Piston Head For Tokyo Marui G17 Gen 5 GBB Airsoft

COWCOW Technology Enhanced Piston Head For Tokyo Marui G17 Gen 5 GBB Airsoft Rubber Construction Airsoft Piston Head Design For Replace the Original Internal Parts The functions can operate more reliably and can withstand colder temperatures Suitable For Tokyo Marui G17 Gen 5 Gas Blow Back GBB Airsoft Pistol