The Aero Precision M4E1 Threaded Stripped AR-15 Upper Receiver is a step above your standard MIL-SPEC upper receiver. Featuring an angular machined design and crafted from 7075-T6 aluminum, this upper receiver is precision machined to work with all MIL-SPEC AR-15 parts. Forgo the forward assist and save yourself some weight with this stripped model upper receiver. Accurate and reliable, the Aero Precision M4E1 Threaded Stripped AR-15 Upper Receiver is perfect for your next custom build.
NOTE: Port door not included.