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RSR Part #: APAR600002C Manufacturer Part #: APAR600002C

Aero Precision, M4E1 Stripped Lower, 223REM, 556NATO, Flat Dark Earth


  • Works with standard AR15 components and magazines
  • Perfect base for your custom AR15 build
  • Threaded Bolt Catch Roll Pin

Product Description

The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.