COWCOW Technology Enhanced 13.7mm Piston Head for Marui Hi-Capa/ 1911 GBB

COWCOW Technology Enhanced 13.7mm Piston Head for Marui Hi-Capa/ 1911 GBB Enhanced Piston Head for Air-Tightness. Designed to withstand high impact pressure. Stabilized Performance. Improved durability over TM piston head Compatible with 13.5mm - 13.85mm loading nozzle. Suitable For Tokyo Marui Hi-Capa/ 1911 Series Airsoft Gas Blow Back GBB Pistol