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Need help with identification

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  • JoeGSX
    Member
    • Mar 2008
    • 460

    Need help with identification

    Any idea what the notch out of top of upper is for?

  • #2
    Bug Splat
    Calguns Addict
    • Dec 2007
    • 6561

    I think it's for indexing a matching handguard system. Can remember which though.

    Sent from my cm_tenderloin using Tapatalk

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    • #3
      m16
      Veteran Member
      • Aug 2010
      • 2527

      That looks like a DRD Tactical billet upper, that notch is for indexing their handguard when you install it.
      Marine Raider Foundation

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