Well, well, well. It looks like the Sig Rattler just got a baby brother. Just announced today is the Sig MPX Copperhead Ultra–Compact 9mm Personal Defense Weapon (PDW). Sporting a 3.5” barrel and a collapsing pistol stabilizing brace, the total overal length is an impressive 14.5”. The MPX Copperhead has fully ambidextrous controls and of course accepts current MPX magazines. Integrated into the barrel is a muzzle brake, leaving me to wonder if the MPX Copperhead can be easily suppressed.

More details to follow.

The MPX Copperhead considerably reduces the length, width, and size of the MPX platform making it the most compact addition to the MPX family of firearms,” said Tom Taylor, Chief Marketing Officer and Executive Vice President, Commercial Sales, SIG SAUER, Inc. “The Copperhead is the perfect combination of the features and performance our consumers expect from a SIG MPX in a compact package.

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 shooters 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.

COPPERHEAD: New Sig MPX Ultracompact

• Total length: 14.5”
• Barrel length: 3.5”
• Barrel Twist: 1:10”
• Weight: 4.5lbs
• Finish: Cerakote E190
• Caliber: 9mm Luger
• MSRP: $1835