COWCOW Spring Set for Marui G17 Gen5 GBB Airsoft

Made from high strength spring steel Hard coating prevents corrosion Enhances blowback kick 120% nozzle spring and 120% hammer spring Package includes : GBB 9-7 / GBB 12-8 / GBB 12-9 / GBB 12-41 / GBB 12-43 / GBB 12-47 / GBB 12-51 / GBB 12-54 / GBB 12-58 / GBB 12-60 / GBB 12-61