The Golden Eagle Polymer M4/M16 Airsoft Upper Receiver is an upgrade part that quickly attaches to most M4 and M16 airsoft AEG lower receivers. Additionally, it features an upper optics rail for integration of your favorite airsoft scopes. It comes with all the parts you need, including the metal D-ring, metal top rail, charging handle, ejection port cover door, and forward assist button (push button).
Airsoft M4 upper receiver
|Construction||Polymer Receiver, Metal RIS|
|Compatibility||Most M4/M16 airsoft AEGs|
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