SIG SAUER P320-XTEN 10mm 15-Round Magazine

SIG SAUER P320-XTEN 10mm 15-Round Factory Magazine

Equip a compatible SIG SAUER P320-XTEN with a genuine factory 15-round magazine built for 10mm Auto ammunition. This black magazine uses a steel body and polymer floorplate, providing the factory geometry and capacity specified for the full-size P320-XTEN platform. It is suitable as a spare, replacement, or additional range magazine for owners who want an OEM component rather than a magazine adapted from another caliber. The exact version is manufacturer part number 8900743.

Purpose-Built for the P320-XTEN

The P320 family includes multiple calibers and frame sizes, so magazine selection must be based on the exact pistol configuration. This magazine is specifically identified for the 10mm Auto P320-XTEN and holds 15 rounds. It is not a 9mm, .357 SIG, .40 S&W, or .45 Auto magazine, and it should not be assumed to fit every pistol carrying the broader P320 name. Confirm the model and caliber markings on the firearm before loading.

The flush-fit profile is intended to seat against the compatible full-size grip rather than functioning as an extended magazine. Factory feed geometry, follower travel, spring tension, and magazine-catch placement work together to present 10mm cartridges properly to the pistol. A high-impact polymer floorplate closes the base of the steel magazine body and provides a durable surface for routine handling.

Steel Construction and Factory Fit

The heat-treated carbon-steel body has a coated black finish intended to support smooth insertion and removal while helping protect the metal during normal use. Manufacturing stamps or the exact shade of the finish may vary slightly, but the MPN and UPC identify the correct SIG SAUER factory model. As with any magazine, reliability also depends on proper ammunition, correct loading, maintenance, and the condition of the host firearm.

Key Specifications

• Genuine SIG SAUER factory magazine
• Compatible platform: P320-XTEN
• Caliber: 10mm Auto
• Capacity: 15 rounds
• Flush-fit configuration for the compatible grip
• Heat-treated steel magazine body
• Black coated finish
• High-impact polymer floorplate
• Manufacturer part number: 8900743
• UPC: 798681657063

Use, Inspection, and Legal Considerations

Before use, confirm the pistol is unloaded and verify that the empty magazine inserts, locks, releases, and drops free as expected. Follow SIG SAUER’s current P320-XTEN instructions for loading, unloading, cleaning, and inspection. Periodically check the feed lips, follower, spring movement, body, floorplate, and magazine-catch opening for fouling, damage, or unusual wear. Do not force cartridges into a damaged or obstructed magazine.

Magazine-capacity restrictions vary by state and locality. Buyers are responsible for confirming whether a 15-round magazine may be purchased, possessed, and used at the destination. This listing includes one magazine only; the pistol and ammunition are not included.