The MPX Copperhead has a monolithic Elite Series Cerakote® finish upper receiver, an integrated stock knuckle lower receiver, and a 3.5″ barrel with integrated muzzle brake. The innovative SIG SAUER Pivoting Contour Brace (PCB) is included with the MPX Copperhead, providing pistol users with a brace that conforms to the movement of the shooter’s arm with a proprietary swivel mechanism for perfect positioning and may be quickly deployed.
Unusual design, unrivaled performance, and familiar AR operation. With a new level of operator safety, in-field adaptability, and proven dependability in the roughest circumstances, the SIG MPX redefines the submachine gun category. With its dual-sided selector switch, magazine release, charging handle, and bolt release, the SIG MPX is ideal for left- or right-handed shooters.