Sig Sauer builds this factory magazine (part no. MAG-226-43-12) for the P226, its full-size duty pistol, holding 12 rounds in a blued steel body sized for both .40 S&W and .357 SIG. Since both cartridges share the same case dimensions and magazine geometry, P226 owners can run either chambering through this same magazine, a common setup for shooters who own both barrels. Manufactured to Sig’s own factory tolerances, it feeds and seats exactly as the P226 was engineered to run. For Sig Sauer P226 owners, this handgun magazine is a dependable factory-correct spare.

Key Specifications

• Chambered for .40 S&W and .357 SIG, sharing one magazine geometry.
• Holds 12 rounds, the standard capacity for this platform.
• Fits the Sig Sauer P226 as a factory-spec magazine.
• Finished in blued steel for a traditional, corrosion-resistant body.

Frequently Asked Questions

Does one magazine work for both .40 S&W and .357 SIG? Yes, both cartridges share the same case head dimensions and run through this same magazine.

Is this a genuine Sig Sauer factory magazine? Yes, manufactured by Sig Sauer to P226 specifications.

Buy the Sig Sauer P226 12-Round .40 S&W/.357 SIG Magazine

A factory-correct spare keeps a P226 running reliably in either chambering. Order it from our Lubbock, Texas gun shop for fast, insured shipping.