Out of stock
SIG Sauer MPX Copperhead 9mm AR Pistol | Tan
Out of stock

Sig Sauer MPX Copperhead 9mm AR Pistol, Coyote Tan - PMPX-3B-CH

SKU 5165450048
Brand Sig Sauer
Model Number PMPX-3B-CH
UPC 798681599011
Customers must read Compliance Information before purchasing.
This product is fulfilled by a PSA Partner and shipping times may vary.

Product Details


Sig Sauer MPX Copperhead 9mm AR Pistol, Coyote Tan - PMPX-3B-CH

  • Caliber: 9mm Luger
  • Action: Semi-auto
  • Operating System: Gas Piston
  • Trigger: Single Stage, Polished
  • Receiver Finish: Coyote Tan Cerakote
  • Barrel Material: Carbon Steel
  • Barrel Length: 3.5”
  • Twist Rate: 1:10
  • Overall Length: 14.5”
  • Width: 2.4 in
  • Height: 8 in
  • Weight: 4.5 lbs.
  • Accessory Rail: MIL-STD M1913
  • Magazine: (1) MPX 20 Round Mag


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.



  • Monolithic Upper Receiver
  • 3.5” Barrel with Integrated Flash Hider
  • 2-Position Pistol Contour Brace



For the best selection of Sig Sauer Rifles and Pistols like the SIG MPX Copperhead, shop Palmetto State Armory!


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Must be 21 or older to purchase.
All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
It is the customer’s responsibility for understanding state laws regarding magazine capacities. Palmetto State Armory abides by all state regulations regarding the sale of high capacity magazines. We DO NOT ship high-capacity magazines with firearms to certain states. We WILL NOT replace high capacity magazines with state compliant magazines. We DO NOT offer refunds in place of the magazines. Please see our terms and conditions for a list or restricted states.
Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).