Current order processing time frame: 4 business days
USPS First Class Mail is currently taking over 2 weeks for delivery from ship date.

Owned and Operated by Osage County Guns

Shop for Sig Sauer

Upgrade your rifle with a new M400, 516, or MCX Upper Receiver!

8 Item(s)

per page

Grid  List 

Set Descending Direction
  1. Sig Sauer M400 / AR15 Stripped Upper Receiver

    Sig Sauer M400 / AR15 Stripped Upper Receiver

    $199.99

    Out of stock

    Sig Sauer M400 / AR15 Stripped Upper Receiver Learn More
  2. Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO

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

    $1,579.99

    Out of stock

    Sig Sauer MCX AR15 Conversion Kit - 11.5" 5.56mm NATO Learn More
  3. Sig Sauer MCX AR15 Conversion Kit - 16" .300 BLK

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

    $1,579.99

    Out of stock

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

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

    $1,579.99

    Out of stock

    Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO Learn More
  5. Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" .300 Blackout

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

    $1,579.99

    Out of stock

    Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" .300 Blackout Learn More
  6. Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" 5.56mm NATO

    Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" 5.56mm NATO

    $1,579.99

    Out of stock

    Sig Sauer MCX Rattler AR15 Conversion Kit - 5.5" 5.56mm NATO Learn More
  7. Sig Sauer MCX Upper Receiver - 16" 5.56mm NATO

    Sig Sauer MCX Upper Receiver - 16" 5.56mm NATO

    $1,199.00

    Out of stock

    Sig Sauer MCX Upper Receiver - 16" 5.56mm NATO Learn More
  8. Sig Sauer MCX Upper Receiver Assembly (Gray)

    Sig Sauer MCX Upper Receiver Assembly (Gray)

    $399.99

    Out of stock

    Sig Sauer MCX Upper Receiver Assembly (Gray) Learn More

8 Item(s)

per page

Grid  List 

Set Descending Direction