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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 P320 Compact .40 S&W Caliber Exchange (X-Change) Kit, 10rd
    Convert your P320 to a compact .40 S&W. This doesn't work with .45 ACP P320's. Includes grip shell, full slide assembly with SIGLite night sights pre-installed and one 10rd magazine. Learn More
  3. Sig Sauer MCX 9" .300 Blackout Suppressed Upper Kit
    Sig Sauer MCX 9" .300 Blackout Suppressed Upper Kit Learn More
  4. Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO

    Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO

    Regular Price: $1,489.99

    Special Price $1,299.99


    Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO Learn More
  5. 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 $1,199.99


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

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

    Regular Price: $1,489.99

    Special Price $1,199.99


    Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO Learn More
  7. Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" .300 BLK

    Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" .300 BLK

    Regular Price: $519.99

    Special Price $429.99


    Sig Sauer MCX Conversion Kit (Tapered Lug) - 16" .300 BLK Learn More
  8. Sig Sauer MCX Conversion Kit (Tapered Lug) - 6.75" .300 BLK

    Sig Sauer MCX Conversion Kit (Tapered Lug) - 6.75" .300 BLK

    Regular Price: $519.99

    Special Price $499.99


    Sig Sauer MCX Conversion Kit (Tapered Lug) - 6.75" .300 BLK Learn More
  9. Sig Sauer MCX Conversion Kit (Tapered Lug) - 9" .300 BLK

    Sig Sauer MCX Conversion Kit (Tapered Lug) - 9" .300 BLK

    Regular Price: $549.99

    Special Price $409.99


    Sig Sauer MCX Conversion Kit (Tapered Lug) - 9" .300 BLK Learn More
  10. Sig Sauer MCX Conversion Kit w/ 2-Stage Trigger - 9" .300 BLK

    Sig Sauer MCX Conversion Kit w/ 2-Stage Trigger - 9" .300 BLK

    Regular Price: $1,439.00

    Special Price $1,329.99


    Sig Sauer MCX Conversion Kit w/ 2-Stage Trigger - 9" .300 BLK 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