Aero Precision's M4E1 Threaded Stripped Upper Receiver is ready to serve as the core of your next custom AR-15 project. It combines the benefits of Aero's M4E1 Enhanced Upper with threads up front to accept a standard AR-15 barrel nut and handguard attachment, for those who prefer to build a rifle with a different handguard from Aero's Gen 2 Enhanced or Atlas 'guards. The M4E1 Threaded Stripped Upper Receiver is forged from 7075 T6 aluminum, like a regular mil-spec receiver, but with angular external contours that add the strength – and custom look – of a "billet" receiver. The good news: parts compatibility is "mil spec" all the way. The A Mfg: Aero Precision
Aero Precision Ar-15 M4e1 Stripped Upper Receiver 5.56mm
$97.74
Strength & Looks of "Billet," Easy Parts Compatibility of "Mil-Spec"
