Aero Precision
Enhanced 7075-T6 forging with a billet-style profile and standard AR-15 barrel-nut threads.

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Aero Precision M4E1 AR-15 Threaded Stripped Upper Receiver, Black Anodized, APAR700201C
The M4E1 Threaded Stripped Upper Receiver uses an enhanced 7075-T6 forging to create a billet-style exterior while retaining standard AR-15 barrel-nut threads. Aero documents M4 feed ramps, .250-inch pin holes, laser-engraved T-marks, and a threaded forward-assist roll pin on the 6.9-ounce receiver. The forward assist and ejection-port cover are not included.
Add the Aero Precision M4E1 Stripped Upper Receiver to your build and see how it enhances your platform.