Prowin Adapter Ring for Marui M4 MWS GBB to AEG Type Nut

Prowin Adapter Ring for Marui M4 MWS GBB to AEG Type Nut Metal Construction Design For Adapt The AEG Rail Handguard to The GBB Rifle Suitable For Tokyo Marui MWS Series Gas Blow Back GBB Rifle Airsoft Guns