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.
Specifications
Caliber: 9mm Luger
Barrel: 3.5 in
Mags Included: (1) 10rd Polymer Mag
Mag Type: MPX
Brace Type: PCB
Barrel Material: Carbon Steel
Trigger Type: Single Stage Polished/Hard-Coat
Twist: 1:10
Forend Type: Alloy
Grip Type: Polymer
Receiver Finish: Cerakote
Overall Length: 14.5 in
Overall Width: 2.4 in
Height: 8 in
Accessory Rail: M1913
Operating System: Gas Piston
Weight: 4.5 lbs 
