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Sig Sauer MPX Copperhead 3.5″ 9mm Pistol with Collapsible Brace – PMPX-3B-CH


Availability: In stock

SKU: 798681599011 Categories: , ,

The Sig Sauer 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 Sig Sauer 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.


  • Barrel Length: 5 in (89 mm)
  • Caliber:  9mm Luger
  • Height: 8 in [203 mm]
  • Overall Length:   5 in [368 mm]
  • Overall Width:   4 in [61 mm]
  • Twist Rate:   1:10
  • Weight:   5 lb (2 kg)
  • Operating System: Gas Piston
Weight 6 lbs
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