SIG 8901964 P211/P320 9mm 23RD

The SIG 8901964 P211/P320 9mm 23-round magazine is a factory-standard high-capacity mag built for shooters running Sig Sauer's modern duty and competition pistols. If you're running a P211, P320, M17, M18, or P250 in 9mm, this mag delivers the round count and reliability you need for range sessions, USPSA competition, or duty carry. The 23-round capacity gives you serious firepower in a double-stack platform, and the design is fully USPSA compliant so you can take it to matches without hassle.

Built with a steel magazine body and a tough aluminum baseplate, this mag is engineered to handle hard use. The orange follower makes it instantly obvious when the mag is empty—no fumbling to check load status. Rear witness holes let you verify capacity at a glance without removing the magazine from your pistol. The baseplate assembly pairs a durable aluminum construction with a polymer sleeve, seated to fit full-size and carry grip modules seamlessly. Note that there will be a slight gap if you run this on a P320 compact grip module, but full-size and carry configurations will seat flush.

Compatibility is broad: this magazine works across the P320 platform in XFIVE, XFULL, XCARRY, and standard full and carry sizes. P211 owners need the factory magwell installed to use it. Whether you're stocking spares for the range, building a competition loadout, or backing up your duty rig, a factory Sig magazine is never a bad call—they're proven, reliable, and backed by the same engineering as your pistol.

Key Features

• 23-round capacity in double-stack 9mm
• Orange follower for quick empty-mag confirmation
• Rear witness holes to check loaded rounds without removal
• Durable aluminum baseplate with polymer sleeve
• USPSA competition compliant
• Compatible with P211, P320, M17, M18, and P250 9mm models
• Factory-standard magazine—the same mag that ships with P211 23-round models

Specifications

Frequently Asked Questions

Will this P211/P320 magazine work with my P320 compact?

Yes, it will fit, but there will be a visible gap between the magazine and the compact grip module. It seats fully flush on full-size and carry P320 grip modules.

What P320 models is this magazine compatible with?

This magazine works with P320 XFIVE, XFULL, XCARRY, standard full-size, and carry models, as well as P320 M17 and M18 variants. It's also compatible with P211 models equipped with the factory magwell, and with P250 9mm pistols.

Can I use this in USPSA competition?

Yes. This magazine is USPSA compliant and is a popular choice for competitors running P320 or P211 platforms.

How do I know when the magazine is loaded or empty?

The orange follower is easy to spot—when you see it at the top of the mag, it's empty. The rear witness holes also let you count rounds and confirm capacity without removing the magazine from your pistol.