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Unfortunately, the following product is currently unavailable through Rainier Arms.

Sig Sauer MCX/MPX Thin Side-Folding Stock

Short-Barrel Rifle


Sig Sauer factory replacement skeletonized folding stock installs easily on your SIG MCX or SIG MPX via the receiver's 1913 interface. This folding stock is made from aluminum to reduce unwanted weight and the rubber buttpad helps add comfort and a secure gripping surface to the shooters shoulder.


  • Lightweight
  • Folds for compact storage
  • Rugged aluminum construction
  • Ergonomic design
More Information
Product Type Short-Barrel Rifle
Manufacturer Sig Sauer
Color Black

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