Out of stock
SIG Sauer MPX PCB KeyMod 9mm AR Pistol | FDE
Out of stock

Sig Sauer MPX PCB 9mm 4.5" Keymod AR Pistol - COY 30rd - PMPX-4B-9-COY

SKU 5165450050
Brand Sig Sauer
Model Number PMPX-4B-9-COY
UPC 798681600540
Customers must read Compliance Information before purchasing.

Product Details


Sig Sauer MPX PCB 9mm 4.5" Keymod AR Pistol - COY 30rd - PMPX-4B-9-COY

  • Action: Semi-Auto
  • Operating System: Gas Piston, Rotating Bolt
  • Trigger: Timney Single-Stage Trigger
  • Stock: Fixed, Folding PCB
  • Forend Type: Alloy, Keymod
  • Finish: Coyote Tan Cerakote
  • Rifling: 1:10
  • Barrel Length: 4.5”
  • Extended Length: 22.5”
  • Folded Length: 13.5”
  • Height: 8”
  • Weight: 6.0 lbs. (without mag)
  • Magazine: 30 Round (MPX)


The MPX sets a new standard for performance and quality in the sub-gun category. Featuring AR Style controls and a closed bolt piston system, the MPX is designed to fulfill the needs of competitive and professional users alike. The PCB features a folding brace and 4.5” barrel for easy storage and maneuverability.


  • Timney Single-Stage Trigger
  • Folding Fixed PCB Brace
  • Free-Floating M-Lok Handguard


Palmetto State Armory carries a wide selection of Sig Sauer firearms for all purposes from self-defense to competition for unbelievable prices!


Q & A


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).