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This package deal includes the pieces you need to start building your own M4E1 (AR15) Rifle, including a M4E1 Threaded Upper Receiver, AR15 ATLAS S-ONE Handguard of choice and a M4E1 Stripped Lower Receiver.


  • M4E1 Stripped Lower Receiver (Tungsten Cerakote)
  • M4E1 Threaded Upper Receiver (Tungsten Cerakote)
  • 15" M-LOK ATLAS S-ONE Handguard
  • All 3 pieces are finished in mil-spec Tungsten Cerakote

Aero Precision M4E1 Atlas Builder Set Tungsten Cerakote

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