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IA Iron River Armory

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

SKULIP|SIPMPX3BCH Conditionnew CategoryAR Pistols
$2191.18
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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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Specs at a glance

SIG Sauer MPX Copperhead Pi… SPECS AT A GLANCE 4.5 lb WEIGHT 9mm SIZE
Editorial diagram — measurements verified during testing.
Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$2191.18