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  1. Rainier Arms MK12 223 Wylde Partial Upper Receiver - 18"
    Rainier Arms MK12 223 Wylde Partial Upper Receiver - 18"
    $1,050.00
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  1. Barrel Profile MK12 SPR Remove This Item
  2. Price $1,050.00 - $1,059.99 Remove This Item
  3. Rail Length 12.5" Remove This Item
  4. Manufacturer Rainier Arms, LLC Remove This Item
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