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Echo1 Complete M4 Uppper Reciever - Black

  • 1995

Echo1 Complete Replacement Upper Receiver for M4

Polymer Construction

Designed for Two-Piece Hop Up Units

Compatible with Echo1 Two-Piece Hop up Unit M4/M16 and any other compatible brands


  • Polymer Upper Receiver
  • Dust Cover Assembly
  • Charging Handle with Spring

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