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Sig Sauer MPX
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Sig Sauer

MPX

$2,399.99
$2,199.99
Sale Price
Available
California DOJ roster CA DOJ Roster

This handgun is not listed as California compliant under the California handgun roster.

Sig Sauer MPX Copperhead, Semi-automatic Pistol, 9MM, 3.5" Barrel with Integrated Flash Hider, Cerakote Finish, Coyote, Pistol Brace, 20 Rounds, 1 Magazine PMPX-3B-CH

Key Details
Brand Sig Sauer
Manufacturer Part Number PMPX-3B-CH
UPC 798681599011
SKU SGPMPX-3B-CH
Current Stock 11 available
Quantity Updated Apr 16, 2026 7:35 PM
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Purchase Requirements
  • This product requires FFL processing before pickup or transfer.
  • Age verification is required before checkout completion.
  • California compliance or distributor restriction review may apply.
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

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 flash hider. 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.

Features
  • 3.5 Barrel"
  • Cerakote Finish
  • Pistol Brace
Specifications
UPC: 798681599011
Manufacturer: Sig Sauer
Manufacturer Part #: PMPX-3B-CH
Model: MPX
Model (Alt): Copperhead
Action: Semi-automatic
Barrel Length: 3.5"
Capacity: 20 Rounds
Finish: Cerakote
Grips: Sig Sauer
Type: AR