G&P MWS Forged Aluminum M4 Upper Receiver w/ Hopup Chamber (Cerakote Black Finish) for Marui M4A1 MWS GBB reg_GS Ambidextrous Magazine Release

Ambidextrous Magazine Release

Suitable for Ares Amoeba M4 AEG Rifle

Full face mesh protection

same plane flip apertures

Aluminum Reinforced M LOK System Handguard

G&P MWS Forged Aluminum M4 Upper Receiver w/ Hopup Chamber (Cerakote Black Finish) for Marui M4A1 MWS GBB reg_GS Ambidextrous Magazine ReleaseG&P MWS Forged Aluminum M4 Upper Receiver w Hopup Chamber (Cerakote Black Finish) for Marui M4A1 MWS GBB Aluminum Construction (Black Cerakote finish) Cerakote finish For better resistance to the elements and or potentially corrosive chemicals. Design For Upgrade the Original Parts More Durable Comes with a hop up chamber to further maximize the performance of the rifle Suitable For Tokyo Marui M4A1 MWS Series Airsoft Gas Blow Back GBB Rifle