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  1. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    $855.00
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  2. Rainier Arms RUC 5.56 NATO DI Complete Upper - 16"
    Rainier Arms RUC 5.56 NATO DI Complete Upper - 16"
    Special Price $664.00 Regular Price $830.00
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  1. Gas Block Diameter .750" Remove This Item
  2. Thread Pitch 1/2x28 (.22 cal) Remove This Item
  3. Barrel Length 16" Remove This Item
  4. Price $0.00 - $999.99 Remove This Item
  5. Rail Length 15" Remove This Item
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