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Receiver Parts

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  1. SIG SAUER MCX Rattler 300BLK Complete Upper - 5.5"
    SIG SAUER MCX Rattler 300BLK Complete Upper - 5.5"
    Special Price $1,759.99 Regular Price $1,999.99
  2. SIG SAUER MCX Rattler 5.56 NATO Complete Upper - 5.5"
    SIG SAUER MCX Rattler 5.56 NATO Complete Upper - 5.5"
    Special Price $1,824.99 Regular Price $1,999.99
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