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  1. Sig P320 Compact .40 S&W Caliber Exchange (X-Change) Kit
    Sig P320 Compact .40 S&W Caliber Exchange (X-Change) Kit, 13rd Learn More
  2. Sig Sauer MCX 9" .300 Blackout Suppressed Upper Kit
    Sig Sauer MCX 9" .300 Blackout Suppressed Upper Kit Learn More
  3. Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO
    Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO Learn More
  4. Sig Sauer MCX AR15 Conversion Kit - 16" .300 BLK

    Sig Sauer MCX AR15 Conversion Kit - 16" .300 BLK

    Regular Price: $1,489.99

    Special Price $1,239.00


    Sig Sauer MCX AR15 Conversion Kit - 16" .300 BLK Learn More
  5. Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO

    Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO

    $1,489.99


    Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO Learn More
  6. Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" 5.56mm NATO
    Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" 5.56mm NATO Learn More
  7. Sig Sauer MCX Conversion Kit (Tapered Lug) - 6.75" .300 BLK
    Sig Sauer MCX Conversion Kit (Tapered Lug) - 6.75" .300 BLK Learn More
  8. Sig Sauer MCX Conversion Kit (Tapered Lug) - 9" .300 BLK
    Sig Sauer MCX Conversion Kit (Tapered Lug) - 9" .300 BLK Learn More
  9. Sig Sauer MCX Conversion Kit w/ 2-Stage Trigger - 9" .300 BLK
    Sig Sauer MCX Conversion Kit w/ 2-Stage Trigger - 9" .300 BLK Learn More
  10. Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" .300 Blackout

    Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" .300 Blackout

    Regular Price: $1,579.99

    Special Price $1,329.99


    Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" .300 Blackout Learn More

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Sig Sauer's Caliber X-Change Kits let you change the caliber of your centerfire pistol. These are specific to your exact model of pistol. You cannot use a P229 Caliber X-Change Kit on a P226 or vice versa.
Conversion & Caliber X-Change Kits

Minimal Price: $ 239.00 239