SIG Sauer MPX Copperhead Pistol 9mm 3.5-inch 20rd

About this product

Built around the MPX platform, the SIG Sauer MPX Copperhead is a compact 9mm pistol suited to PDW-style applications and range use. It features a monolithic coyote Cerakote upper and a 3.5-inch carbon-steel barrel for compact handling. The firearm employs a short-stroke gas piston operating system and ships with the SIG Pivoting Contour Brace (PCB) and one 20-round polymer magazine. Controls and components are configured for straightforward handling and in-field adaptability.

Key Specifications

• Chambered in 9mm.
• The barrel measures 3.5 inches and is made of carbon steel.
• Overall length is 14.5 inches.
• The weight is 4.5 lb (72 oz).
• Includes one 20-round polymer magazine.
• Operating system is a short-stroke gas piston.
• Action type is Semi-Auto.
• Upper receiver finish is coyote Cerakote with a black barrel finish.
• Stock is a Pivoting Contour Brace (PCB).
• Rate of twist is 1-in-10.

Compact dimensions, durable finishes, and an established operating system make the MPX Copperhead a practical choice for shooters who need a short-barrel AR-style pistol with modern handling features. Its design emphasizes straightforward operation and modular ergonomics to support range use and duty-style applications where allowed. Built with SIG Sauer’s MPX family fundamentals, the Copperhead balances compact form with practical controls and accessory compatibility.

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