SIG SAUER P250/P320 Full-Size 10-Round .40/.357 SIG Magazine

The SIG SAUER P250/P320 full-size 10-round magazine is a factory magazine for compatible full-size and carry pistols chambered in .40 S&W or .357 SIG. This exact configuration is identified by manufacturer part number MAG-MOD-F-43-10 and UPC 798681505135. It combines a 10-round capacity with the original factory dimensions required for proper fit in the intended P250 and P320 grip modules.

Factory fit and dual-caliber compatibility

SIG SAUER lists this magazine for full-size and carry P250 and P320 pistols in both .40 S&W and .357 SIG. These two cartridges share the magazine body in this factory configuration, allowing owners of a compatible pistol to select the correct magazine without relying on an aftermarket approximation. Always verify the pistol’s model, grip-module size, and chambering before ordering.

10-round double-stack design

The detachable double-stack magazine holds 10 rounds and uses a durable steel body with a black finish. Its follower, spring, feed lips, and baseplate are designed as a coordinated assembly. The full-size form factor is intended to seat correctly in the longer P250/P320 grip frame while supporting the cartridge presentation and slide-lock interaction expected from a factory magazine.

Practical replacement or spare

This magazine can serve as a direct replacement, a range spare, or part of a regular magazine rotation. Keeping magazines individually marked can help identify a specific unit if a feeding or slide-lock issue needs to be isolated. Before each use, inspect the body and feed lips for deformation, check that the baseplate is secure, and confirm that the follower moves freely.

Key specifications

• Brand: SIG SAUER
• Compatible models: P250 and P320 full-size/carry
• Calibers: .40 S&W and .357 SIG
• Capacity: 10 rounds
• Magazine type: Detachable double stack
• Body: Steel
• Color: Black
• Quantity: One magazine
• Manufacturer part number: MAG-MOD-F-43-10
• UPC: 798681505135

Care and compliance

Keep the magazine clean and dry, particularly around the feed lips and follower. Avoid excessive lubricant inside the body because it can collect residue. Follow SIG SAUER’s instructions before disassembly. Magazine-capacity rules and shipping restrictions vary by jurisdiction, so confirm local eligibility before purchasing.