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NEW & UNFIRED is a Factory HK-MR556A1 Complete Upper Receiver, New Production, Date Code (CB), 2021. Barrel was Cut, Crowned to 10.4″ and Threaded 1/2 X 28 by TDyer Gunsmith. Has a 9″ Factory New or Like-New HK-MRS Keymod Hand Guard. Includes Charging Handle, & Complete Bolt Carrier Group. Factory Gas Block was Relieved/Opened for Suppressed & Unsuppressed Fire. Test Fired Only by TDyer Gunsmith for Function. Upper is Unfired Since Conversion.
Ready for your SBR or Pistol Build.
ALL NFA RULES APPLY.