m4e1 aero precision

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    Aero Precision M4E1 Threaded Assembled Upper Receiver - Anodized Black

    The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is...
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