Sig Sauer P320 X-Five Legion 9mm Luger Steel Magazine - Black

The Sig Sauer P320 X-Five Legion 9mm magazine is a steel-built, 17-round extended magazine designed to keep your competition or carry gun running through extended shooting sessions. Built with the same attention to detail as the X-Five Legion platform itself, this magazine pairs reliable steel construction with a lightweight aluminum basepad for durability and reduced weight. Whether you're running drills at the range, competing in matches, or carrying a full loadout, a properly functioning magazine is where reliability starts.

This magazine works across the full P320 ecosystem—it's compatible with any P320 Carry, Full-size, and X-Five variant, with or without a magwell installed. That cross-platform compatibility means you can standardize your spares across multiple guns or configurations, a practical detail that adds up when you're building a shootable inventory.

Built to Sig Sauer's exacting standards, the steel body and aluminum basepad are engineered to handle the rigors of frequent loading, shooting, and range use. The extended capacity gives you 17 rounds of 9mm Luger per magazine—useful if you're looking to reduce reload frequency or maintain higher on-hand capacity. Simple, reliable, and purpose-built for shooters who demand consistency.

Key Features

• 17-round capacity in 9mm Luger
• Steel construction for durability and reliability
• Henning Group aluminum basepad reduces weight
• Compatible with P320 Carry, Full-size, and X-Five models
• Works with or without magwell installation

Specifications

Frequently Asked Questions

Will this P320 magazine work with other Sig Sauer pistols?

This magazine is designed for the P320 platform and is compatible with P320 Carry, Full-size, and X-Five variants—with or without a magwell. It is not designed for other Sig models.

Can I use this extended magazine with a magwell attached?

Yes. The magazine functions reliably both with and without a magwell installed on your pistol.

What capacity does this magazine hold?

This magazine holds 17 rounds of 9mm Luger ammunition.

What's the basepad made of?

The magazine features an aluminum basepad by Henning Group, which combines durability with reduced weight compared to steel alternatives.