This Sig Sauer factory magazine (part no. MAGMODC4310) holds 10 rounds in a blued steel body sized for both .40 S&W and .357 SIG on the P320 Compact and P250 Compact frame, a flush-fit option for owners who want a compact grip profile in either chambering. Because the two cartridges share the same case dimensions and magazine geometry, this single part covers both calibers. Manufactured to Sig’s own factory tolerances, it feeds and seats exactly as intended. For Sig Sauer P320 Compact and P250 Compact 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 10 rounds in a flush-fit magazine body.
• Fits both the Sig Sauer P320 Compact and P250 Compact.
• Finished in blued steel for a traditional, corrosion-resistant body.

Frequently Asked Questions

Is this a flush-fit or extended magazine? It’s a flush-fit 10-round magazine, keeping the Compact frame’s grip profile compact for carry.

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.

Buy the Sig Sauer P320/P250 Compact 10-Round Flush-Fit .40/.357 SIG Magazine

A compact, factory-correct spare is an easy way to keep a .40/.357-caliber Compact frame carry-ready. Order it from our Lubbock, Texas gun shop for fast, insured shipping.