Guarder Airtight Rubber for Tokyo Marui Hi-Capa 5.1 / 4.3 GBB Series

Guarder Airtight Rubber for Tokyo Marui Hi-Capa 5.1 / 4.3 GBB Series Rubber Cinstruction Designed to provide optimal air sealing for better and more stable performance Suitable for Tokyo Marui Hi-Capa 5.1/ 4.3 Series Airsoft Gas Blow Back GBB Pistol Magazine