SIG SAUER P320 9mm 30-Round Magazine – Black

The SIG SAUER P320 30-round extended magazine is a factory magazine for compatible 9mm P320 pistols. This black version combines a steel magazine body with an extended-capacity format for range sessions, training and other lawful uses where fewer magazine changes are useful. It is the exact black variant identified by SIG SAUER part number 8900576 and UPC 798681649921.

Factory Extended Magazine

Designed around the P320 magazine well and the 9mm Luger cartridge, this magazine offers a substantial increase over standard-capacity P320 magazines. Its 30-round body extends noticeably below the grip when installed. A removable sleeve at the upper portion of the extended body helps provide a more finished interface when the magazine is used with compatible full-size grip modules.

The magazine uses a complete steel body, a durable polymer follower and a high-tensile spring. A high-lubricity finish supports smooth movement and protects the body during regular handling. Rear witness holes are arranged in five-round increments, allowing a quick visual check of the approximate number of cartridges loaded. The removable base plate simplifies access for routine inspection and cleaning.

Compatibility and Identification

This magazine is intended for compatible SIG SAUER P320 pistols chambered in 9mm. Published fit information includes P320 Full, X-Full, X-Carry and Carry configurations. Because the P320 family includes multiple calibers and grip sizes, confirm the pistol’s exact model and chambering before purchase. A magazine made for another caliber should never be forced into the firearm.

The black finish distinguishes part 8900576 from the related coyote 30-round model, part 8900577. Buyers comparing similar listings should verify both the manufacturer part number and UPC rather than relying on color alone.

Care and Use

Inspect the magazine body, feed lips, follower and base area before use. Keep the interior free of grit, fouling and excessive lubricant, and follow SIG SAUER’s maintenance guidance. With the firearm unloaded and pointed in a safe direction, confirm that the magazine seats and releases correctly before using it at the range. This listing includes one magazine; no firearm or ammunition is included.

Key Features

• Factory SIG SAUER extended magazine
• Fits compatible 9mm P320 pistols
• 30-round capacity
• Steel body with black finish
• Polymer follower and high-tensile spring
• Rear witness holes in five-round increments
• Removable sleeve and base plate
• Manufacturer part number: 8900576
• UPC: 798681649921

Magazine-capacity restrictions and shipping rules vary by jurisdiction and may change. Confirm that purchase, possession and delivery of a 30-round magazine are lawful at the destination before ordering.