The newest addition to the MPX Series, the ultra-compact MPX Copperhead

SKU: PMPX-3B-CH Categories: , , Tag: Product ID: 1772



The MPX Copperhead features a monolithic Elite Series Cerakote® finish upper receiver, with an integrated stock knuckle lower, and a 3.5” barrel with integrated muzzle brake. 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.

SIG MPX Copperhead (Specifications)


  • UPC: 798681599011
  • Manufactures Item Number: PMPX-3B-CH
  • Operating System: Gas Piston
  • Caliber: 9 MM
  • Barrel: 3 1/2 inch
  • Barrel Twist: 1:10
  • Overall Length: 14.5 inches
  • Overall Width: 2.4 inches
  • Overall Height: 8 inches
  • Magazine: (1) 20 rd Mag
  • Weight: 4.5 Lbs


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