This ProMag rifle magazine (mfr. part no. SIGA24) holds 40 rounds of 9mm Luger and fits the Sig Sauer MPX. The body is molded from a proprietary DuPont Zytel-based polymer, paired with an injection-molded follower and a spring formed from heat-treated chrome silicon wire. It’s made in the USA, giving MPX owners an affordable way to add high-capacity spares to the range bag without hunting down factory-only parts.

Key Specifications

• Holds 40 rounds of 9mm Luger.
• Fits the Sig Sauer MPX.
• Zytel polymer body construction.
• Injection-molded follower and heat-treated chrome silicon spring.
• Made in the USA.

Frequently Asked Questions

What firearm does this magazine fit? The Sig Sauer MPX in 9mm Luger.

How many rounds does it hold? 40 rounds.

Buy the ProMag Sig MPX 9mm 40-Round Rifle Magazine

Order the ProMag Sig MPX 9mm 40-Round Rifle Magazine from our Lubbock, Texas gun shop for fast, insured shipping. Browse more rifle magazines at Schaefer Defense.