ProMag SIG03 Sig Sauer P226 9mm 10-Rd Blued Steel Pistol Magazine

The ProMag SIG03 is a 10-round aftermarket replacement magazine for the Sig Sauer P226 in 9mm Luger. Engineered to the factory P226 pattern, it drops in without modification and provides a durable, affordable spare for range use, training, or duty rotation.

The magazine body is formed from heat-treated steel and finished in a corrosion-resistant blued (black oxide) coating. ProMag TIG-welds the body for added rigidity, while an injection-molded polymer follower rides inside against a precision-wound, heat-treated chrome silicon spring for consistent feeding. The result is a tight, reliable feed geometry that matches the P226's well-established pistol magazine spec.

Designed with a flush-fit profile, the SIG03 sits nearly even with the bottom of the P226 grip frame and preserves the pistol's carry-friendly handling. It is backed by ProMag's lifetime warranty, making it a smart addition to any P226 owner's range bag or parts kit.