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  1. Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"
    Rainier Arms RUC DI 300BLK Partial Upper Receiver - 10.7"
    Special Price $400.00 Regular Price $500.00
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  1. Threaded Yes Remove This Item
  2. Thread Pitch 5/8x24 (.30 cal) Remove This Item
  3. Mount M-LOK Remove This Item
  4. Price $400.00 - $409.99 Remove This Item
  5. Rail Length 9.5" Remove This Item
  6. Manufacturer Rainier Arms, LLC Remove This Item
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