This ProMag drum magazine (mfr. part no. DRM-A21) holds 50 rounds of 9mm Luger and is built for the Sig Sauer MPX platform.

Key Specifications

• Holds 50 rounds of 9mm Luger.
• Fits the Sig Sauer MPX platform.
• Magazine body constructed of a proprietary DuPont Zytel-based polymer.
• Features a steel-reinforced upper magazine tower.
• Uses an injection-molded magazine follower.
• Spring formed from heat-treated stainless steel wire.
• Weighs approximately 1.8 lb.
• Overall length of approximately 15 inches.
• Manufactured by ProMag.

Frequently Asked Questions

Will this drum fit the Sig MPX pistol and rifle configurations?

ProMag lists this drum for the MPX platform generally; verify your exact configuration before ordering.

What is the magazine body made of?

A proprietary DuPont Zytel-based polymer with a steel-reinforced upper tower.

Buy the ProMag Sig MPX 50-Round Drum Magazine

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