SIG Sauer P320 Legion 9mm Magazine, 17-Round


A 17-round, 9mm extended magazine for the SIG Sauer® P320 X-Five Legion. Steel construction featuring Henning Group® aluminum base pads.

State and regional magazine capacity restrictions apply. Therefore, we cannot ship this item to California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, Rhode Island, Vermont, Washington, Washington, D.C. and Cook County in Illinois.
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A 17-round, 9mm extended magazine for the SIG P320 X-Five Legion. Steel construction featuring Henning Group aluminum base pads. These magazines will function in any P320 Carry, Full-size, and X-Five variant with or without the magwell. Base pads include the engraved Legion logo.

P320 17-Round Legion Magazine Features

  • 17-round capacity
  • High-lubricity finish for reliable function
  • Removable Henning Group aluminum base pad for easy maintenance
  • High-tensile spring for unmatched reliability and service life
  • Durable polymer follower
  • Complete steel body construction

Images may differ slightly from the actual product. These SIG Sauer high-quality magazines are sourced from multiple manufacturers and made to SIG’s exact specifications. Because of this, there may be slight differences in stamping and finish color.

17-Round Magazine Legion Fit Guide

  • P320 models, including the M-17 and M-18
  • Fits the XSeries grip modules with or without an extended magwell
  • It also fits the SIG P250

The 17-round extended magazine will fit P320 models, including those with XSeries grip modules with or without the magwell installed.

Additional information

Weight N/A
Dimensions N/A


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Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.

Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.

Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.

Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.