SIG SAUER Ultra-Compact MPX Copperhead Now Shipping

SIG SAUER Ultra-Compact MPX Copperhead Now Shipping
SIG SAUER Ultra-Compact MPX Copperhead Now Shipping

NEWINGTON, N.H.-( SIG SAUER, Inc. is pleased to announce the ultra-compact MPX Copperhead is now shipping and available in retail stores.

The SIG MPX Copperhead redefines the sub-gun category with a new level of operator safety, in-field adaptability and proven reliability in the harshest environments with unconventional design, unmatched performance, and familiar AR handling. 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.

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, rapid deploy 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.

MPX Copperhead:

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

To learn more about the MPX Copperhead or locate your local SIG SAUER dealer visit


SIG SAUER, Inc. is a leading provider and manufacturer of firearms, electro-optics, ammunition, airguns, suppressors, and training. For over 100 years SIG SAUER, Inc. has evolved, and thrived, by blending American ingenuity, German engineering, and Swiss precision. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens. Additionally, SIG SAUER is the premier provider of elite firearms instruction and tactical training at the SIG SAUER Academy – a world class, state-of-the-art, 140-acre training facility. SIG SAUER is headquartered in Newington, New Hampshire, and has more than 1,700 employees across eight locations, and is the largest member of a worldwide business group that includes SIG SAUER GmbH & Co. KG in Germany. For more information about the company and product line visit:

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With a good suppressor and maybe a binary trigger, this pistol and it’s arm brace could be a poor man’s HK MP5SD, which IMHO would make it an excellent choice for home defense. (If you think this SIG is still pricey, check out what pre-86 HK MP5SDs are going for if you’re in a state that will let you own one even after jumping through all the Federal paperwork hoops!)

Harry G.

It looks cool, but, what’s the point ? Does it perform any better than the typical semi-auto 9mm hand gun ? If it doesn’t why use a gun designed for two hands when you can use one designed for one hand and actually be able to conceal the thing.


One point is having easily/quickly interchangeable 30-round magazines. Which provides significantly more capacity, if needed.

Michael R

Glock. They make 33 round and a 27 round 9mm magazine that fits all double stack pistols.