Guns Modify EVO CNC Steel Drop in Lower Parts Set for Marui M4 MWS GBB

Guns Modify EVO CNC Steel Drop in Lower Parts Set for Marui M4 MWS GBB Metal Construction Package Include Trigger Box, Magazine Release, Selector, Bolt Catch & Some Parts Design for Upgrade the Original Parts More Durable Suitable For Tokyo Marui MWS M4 Series Gsa Blow Back GBB Rifle Airsoft Guns