Guns Modify Steel Full CNC Bolt Stop for Marui M4 MWS GBB (QPQ Process/ GEI Style)

Guns Modify Steel Full CNC Bolt Stop for Marui M4 MWS GBB (QPQ Process/ GEI Style) CNC Steel Construction Design for Upgrade the Original Part More Durable With Non-Slip Tecture Suitable For Tokyo Marui M4 MWS Series Airsoft Gas Blow Back GBB Rifle