Aero Precision M4E1 Threaded Stripped Upper Receiver

Aero Precision's new Aero Precision M4E1 Threaded Upper Receiver (formerly known as the Gen 2 Upper receiver) gives you that angled billet look without the high cost or the fitment issues many builders experience when trying to mate a non-matching billet upper/lower receiver. Aero precision has machined this stripped upper to accept a standard AR-15 barrel nut and mil-spec upper parts (Forward Assist & Dust Cover not included).M4E1 Features: New enhanced forging that gives the upper receiver a "billet look" Includes Threaded Roll Pin for ease of forward assist installation.Features: M4 Feedramps .250 takedown pin holes Lazer engraved T-marksIncludes: AR-15 Stripped Upper Receiver, Gen 2 in Anodized BlackNote: DOES NOT include port door and forward assist. If you would like these items pre-installed, select our AR-15 Gen 2 Assembled Upper Receiver.