G&P MWS Forged Aluminum M4 Upper Receiver w/ Hopup Chamber (Cerakote Black Finish) for Marui M4A1 MWS GBB Net-Weight-(g)_1250 The set is slated to

The set is slated to work with both stock and aftermarket upgrade parts designed for the MWS which makes this receiver set a great upgrade part for MWS users

CNC machined metal keymod rail

Airsoft enthusiasts can expect to launch from the drop free magazine 19 rounds

Suitable for Tokyo Marui G17 Series Airsoft Gas Blow Back GBB Pistol

Heat emission function

G&P MWS Forged Aluminum M4 Upper Receiver w/ Hopup Chamber (Cerakote Black Finish) for Marui M4A1 MWS GBB Net-Weight-(g)_1250 The set is slated toG&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