SIG SAUER MPX Copperhead 9mm | 3.5in | 20rd

The Sig Sauer MPX Copperhead is a compact, semi-automatic 9mm pistol built around the MPX platform, with a 3.5-inch barrel and a coyote Cerakote finish. It ships with a single 20-round polymer magazine and a Pivoting Contour Brace (PCB) that folds for compact transport. Controls and key components are configured for ambidextrous operation on the MPX platform. For a practical optic option under $1,000 that matches the MPX Copperhead’s intended use, consider the Sig Sauer ROMEO5 red-dot for fast target acquisition and durability on a compact pistol chassis.

Common applications include range training and pistol-caliber carbine (PCC) style competition where compact handling and quick follow-up shots are priorities.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is listed as MPX Copperhead.
• The caliber is 9mm Luger.
• The barrel measures 3.5 inches.
• The overall length is 14.5 inches.
• The magazine capacity is 20 rounds.
• The package includes one 20-round polymer magazine.
• The barrel material is specified as carbon steel with a black barrel finish.
• The receiver finish is coyote Cerakote (monolithic upper).
• The stock/brace type is a Pivoting Contour Brace (PCB) folding pistol stabilizing brace.
• The firearm is described as optic ready with no iron sights installed.
• The twist rate is listed as 1:10.
• The accessory rail type is M1913 (Picatinny).
• The frame material is alloy with a polymer grip.
• The UPC is 798681599011.

This MPX Copperhead is a compact, purpose-driven option for shooters who want an MPX-platform pistol with a short barrel, folding PCB brace and a Cerakote finish for corrosion resistance. Its combination of an integrated monolithic upper, polymer magazine and optic-ready layout makes it suitable for close-range precision on the range and for PCC competition where quick handling and reliability with common 9mm loads are priorities. The MPX platform’s controls and short-stroke gas piston design are built for consistent operation across ammunition types.

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