SIG SAUER P365 .380 ACP 10-Round Flush-Fit Magazine

SIG SAUER P365 .380 AUTO 10-Round Magazine

This factory SIG SAUER magazine is built for P365 pistols chambered in .380 AUTO. Its 10-round capacity and flush-fit baseplate preserve the compact profile of the P365-380 while providing a correct factory replacement or spare for range practice, concealed-carry rotation, or routine maintenance. The magazine corresponds to manufacturer part number 8900714 and UPC 798681655700.

SIG SAUER specifies a steel magazine body with a black-oxide finish, a polymer baseplate, and side witness holes. The double-stack design carries 10 rounds while remaining sized for the micro-compact P365 platform. Because P365 magazines are caliber- and configuration-specific, this model should be used only with compatible P365 pistols chambered in .380 AUTO; it is not a substitute for a 9mm P365 magazine.

Key Features

• Caliber: .380 AUTO / .380 ACP
• Capacity: 10 rounds
• Compatibility: SIG SAUER P365 pistols chambered in .380 AUTO
• Fit: Flush-fit micro-compact configuration
• Magazine type: Double stack
• Body material: Steel
• Finish: Black oxide
• Baseplate: Polymer
• Round indication: Side witness holes
• Manufacturer part number: 8900714
• UPC: 798681655700

Compact Factory Fit

A flush-fit magazine keeps the bottom of the grip compact, helping the P365-380 retain the concealability and handling characteristics for which the platform was designed. The steel tube provides a durable housing for the spring and follower, while the polymer baseplate closes the magazine without adding an extended gripping surface. Side witness holes make it easier to check the approximate loaded condition during preparation or inspection.

Factory magazines are manufactured around the pistol’s intended geometry, including feed-lip dimensions, follower travel, spring pressure, and magazine-catch engagement. Those details matter for feeding, retention, and reliable slide lock. A spare factory magazine is useful for separating ammunition or training loads, replacing a worn magazine, or keeping additional magazines available for practice.

Inspection, Testing, and Maintenance

Before use, verify the firearm’s caliber and confirm that the magazine seats positively, releases normally, feeds correctly, and activates the slide stop when appropriate. Test each magazine with the unloaded pistol first, then follow safe live-fire procedures at an authorized range before relying on it for carry.

Inspect the body, feed lips, follower, spring, and baseplate regularly. Clean away lint, grit, and powder residue according to SIG SAUER guidance, and avoid leaving excess lubricant inside the tube because it can attract debris. Replace the magazine if it becomes dented, cracked, heavily corroded, or unreliable. Purchasers should also confirm all applicable magazine-capacity laws before ordering or possessing this 10-round magazine.