Sig Sauer MPX Copperhead 9mm Pistol with PCB Telescoping Brace and Timney Single Stage Trigger



The MPX Copperhead features a monolithic Elite Series hard coat anodized upper receiver, with an integrated stock knuckle lower, and a 4.5” barrel. The MPX Copperhead comes equipped with the new SIG SAUER Pivoting Contour Brace (PCB) giving pistol users a brace that easily adapts to the movement of the shooter’s arm with a patented swivel operation for perfect placement, and can be rapidly deployed.

Unconventional design, unmatched performance, and familiar AR handling. The SIG MPX redefines the submachine gun category with a new level of operator safety, in-field adaptability and proven reliability in the harshest environments. Completely ambidextrous, the SIG MPX is great for left- or right-handed shooters with its dual-sided selector switch, magazine release, charging handle and bolt release. The SIG MPX operates from a fully-closed and locked rotating bolt, offering enhanced reliability and safety in use. A short-stroke gas piston allows the SIG MPX to run all weights and brands of 9mm ammunition with no adjustments to the gas valve.

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: MPX Copperhead Black
  • Caliber: 9mm
  • Barrel Length: 4.5″ 
  • Twist Rate: 1:10″
  • Overall Length: 22.3″
  • Overall Height: 8″
  • Overall Width: 2.4″
  • Frame Material: Aluminum
  • Frame Finish: Anodized
  • Barrel Material: Carbon Steel
  • Barrel Finish: Nitride
  • Capacity: 20 Rounds
  • Trigger: Timney Single Stage
  • Weight (with magazine): 4.6 lbs.


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