Tokyo Marui Stainless Mount Rail For Hi Capa 5.1 Airsoft GBB (Part # 51S-12)

Tokyo Marui Stainless Mount Rail For Hi Capa 5.1 Airsoft GBB (Part # 51S-12) Stainless Steel Construction Airsoft Mount Rail Design For Replace The Original Airsoft Internal Parts (# 51S-12) Suitable For Hi Capa 5.1 Airsoft Gas Blow Back GBB Airsoft Pistol