Sig Sauer builds this factory magazine (part no. MAG-MOD-F-43-14) for the full-size P320 and P250, holding 14 rounds in a blued steel body sized for both .40 S&W and .357 SIG, two cartridges that share the same case dimensions and magazine geometry. That shared fit lets owners switch barrels between the two chamberings on the same P320 or P250 frame without needing a second set of magazines. Manufactured to Sig’s own factory tolerances, it feeds and seats exactly as intended. For Sig Sauer P320 and P250 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 14 rounds, a full-size capacity for the platform.
• Fits the Sig Sauer P320 and P250 full-size frames.
• Finished in blued steel for a traditional, corrosion-resistant body.
• Classified as a Detachable magazine, Sig’s standard removable design.

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 full-size P320/P250 specifications.

Buy the Sig Sauer P320/P250 14-Round .40 S&W/.357 SIG Magazine

A factory-correct spare keeps a full-size P320 or P250 running reliably in either chambering. Order it from our Lubbock, Texas gun shop for fast, insured shipping.