SIG Sauer P320 X-Ten: Finally, a 10mm P320

The much-talked-about Sig Sauer P320 X-Ten has finally been officially announced. There’s no denying the rampant popularity of the original P320 platform, which is a 9mm, and now Sig will be offering that model chambered in the harder-hitting 10mm.

The P320 X-Ten has a number of features specific to supporting its larger caliber and is being marketed to hunters and self-defense shooters alike.

Sig Sauer P320 X-Ten
The Sig Sauer P320 X-Ten is exactly what it sounds like: a P320 platform chambered in 10mm. (Photo credit: SIG Sauer)

Sig Sauer released the following information about the P320 X-Ten:

The latest addition to the SIG P320 family brings all of the features of the XSeries into a carry style handgun in 10mm for shooters and hunters looking for performance to the power of 10. The P320-XTEN comes standard with a 5” bull barrel, Xray3 day/night sights, and an XSeries optic-ready slide with front and rear serrations.  For those looking for even more precision, every P320-XTEN is optic ready and compatible with the SIG SAUER ROMEO2 reflex optic which is designed to withstand the abuse the 10mm cartridge delivers.  To reduce the recoil, a completely redesigned XSeries polymer grip module provides a strong purchase and stippled finish and makes shooting comfortable for any type of round.  Each P320-XTEN comes standard with two 15-rd magazines. The new SIG P320-XTEN takes performance to the power of 10.

Sig P320 X-Ten
The Sig P320 X-Ten is chambered in 10mm and is a great option for handgun hunters and those focused on self-defense, too. (Photo credit: Sig Sauer)

Yes, you can use 10mm for defense against two-legged threats, it isn’t limited to hunting or defending yourself against four-legged predators. As with any firearm, you are responsible for every shot fired, and as long as you adhere to the four safety rules, you’ll be fine. The P320 X-Ten is a fantastic tip of the hat to the usefulness and versatility of the 10mm cartridge and the gun’s bull barrel and fully textured grip make it clear the gun is meant for serious use.

The Sig Sauer P320 X-Ten is optics ready.
The Sig Sauer P320 X-Ten is optics ready. (Photo credit: SIG Sauer)

Sig Sauer P320 X-Ten Features Include:

  • Optic Ready Slide compatible with Romeo2 and Trijicon RMR
  • 5” Bull Barrel
  • All-new XSeries 10mm/45 Auto Grip Module
  • Flat XSeries trigger with 90-degree break
  • XRAY 3 Day/Night Sights
  • (2) 15rd Steel Magazines
Sig Sauer P320 X-Ten
Sig Sauer P320 X-Ten 10mm has a 15 +1 capacity and a bull barrel. (Photo credit: SIG Sauer)


  • Caliber: 10mm
  • Capacity: 15 +1
  • Color: Black
  • Sights: XRAY3 Day/Night Sights
  • Threaded Barrel: No
  • Optics Ready: Yes
  • Pistol Size: Full Size
  • Overall Length: 8.5 inches
  • Height: 5.6 inches without optic
  • Barrel Length: 5 inches
  • Weight: 33 ounces, empty
  • Sight Radius: 6.8 inches
  • Accessory Rail: M1913 forward of the trigger guard
  • Trigger Action: Striker-fired
  • Trigger Type: X-Series Straight
  • Grip Module: Full-size polymer X-Series
  • Barrel Material: Carbon steel
  • FCU (Fire Control Unit) Material: Stainless steel
  • Slide Finish: Nitron
  • Slide Material: Stainless steel
  • MSRP: Unknown at this time

Do you carry a 10mm for self-defense purposes? If not, would you consider it? Tell us your thoughts in the comments section below.

Kat Ainsworth Stevens is a long-time outdoor writer, official OGC (Original Gun Cognoscenti), and author of Handgun Hunting: a Comprehensive Guide to Choosing and Using the Right Firearms for Big and Small Game. Der Teufel Katze has written for a number of industry publications (print and online) and edited some of the others, so chances are you’ve seen or read her work before, somewhere. A woman of eclectic background and habits, Kat has been carrying concealed for over two decades, used to be a farrier, and worked for a long time in emergency veterinary medicine. She prefers big bores, enjoys K9 Search & Rescue, and has a Master’s Degree in Pitiless Snarkastic Delivery.