Sig Sauer MPX 9mm Luger Polymer Magazine - Black

The Sig Sauer MPX 9mm Luger polymer magazine is a factory-original mag engineered specifically for the MPX platform. Whether you're running the MPX at the range, in competition, or as a duty gun, this magazine delivers the reliability Sig built its reputation on. It's the result of a rigorous 2-year design cycle focused on meeting Sig's exacting quality standards while maximizing performance in the MPX system.

What sets this mag apart is its hybrid construction: metal feed-lips that withstand thousands of rounds and rough handling, paired with a lightweight polymer body that resists warping and maintains shape under pressure. That combination matters when you're counting on your gear to perform. The black polymer finish is durable and low-profile, and it works with all generations of the Sig MPX platform.

Available in your choice of capacity, this magazine is built to be a workhorse—whether you're stocking spares for a training day or gearing up for serious shooting. It's the kind of no-nonsense component that disappears into the background because it simply works.

Key Features

• Metal feed-lips for durability and reliable feeding across thousands of rounds
• Lightweight polymer body resists deformation and shape loss
• Engineered and tested to Sig Sauer quality standards
• Compatible with all generations of Sig MPX
• Black finish, low-profile design

Specifications

Frequently Asked Questions

Is this magazine compatible with all Sig MPX models?

Yes. Sig designed this magazine to work with all generations of the Sig MPX platform.

What capacity options are available?

This magazine is available in 20-round and 35-round configurations to suit your needs.

Why does this magazine use both metal and polymer?

The metal feed-lips provide the durability and reliability needed for thousands of rounds, while the polymer body keeps the magazine lightweight and resistant to warping—the best of both designs.