Sig Sauer P320 XTEN 10mm
Model: 320X5-10-BXR3-R2
Sig Sauer P320 XTEN 10mm
Model: 320X5-10-BXR3-R2
Full Specifications
About This Firearm
The Sig Sauer P320 XTEN is a modular striker-fired 10mm built for duty and hunting. It is current in Sig's lineup. It weighs 33.0 oz with a 5-inch barrel, and the slide arrives cut to Sig's PRO optic footprint with XRAY3 day and night sights already in the dovetails, so the gun is set up for a dot and still usable without one.
Two steel 15-round magazines come with it. The fire control unit is stainless steel and drops into an X-series full-size polymer grip module, so the serialized part of the pistol can move to a different grip without buying another gun. The trigger is Sig's flat X trigger with a 90-degree break. This version has no manual safety, and the accessory rail is a standard M1913 section. The pistol runs 8.5 inches long and 1.3 inches across.
Against its rivals, the Glock G20 Gen5 MOS holds the same 15 rounds on a 4.61-inch barrel with three magazines in the box, and it mounts a dot through an adapter plate, which sits the optic a little higher over the bore. The Springfield Armory XD-M Elite has an MSRP of $674, holds 16 rounds at 31.0 oz, 2.0 oz lighter, and adds a grip safety this gun does not have.
Best For
Strengths & Limitations
- The magazines have steel bodies, not polymer ones, so a magazine dropped on gravel is less likely to crack at the feed lips.
- An M1913 rail takes lights built for any service pistol, with no proprietary mount to track down.
- Sig sells X-series grip modules separately, so grip size and texture can change without a new serialized pistol.
- With no manual safety on this version, the holster covers the trigger guard.
- A polymer frame holds less mass than a steel 10mm of the same size, so the muzzle climbs further on a full-power load.
- The grip module is stippled polymer with no interchangeable backstraps, so changing grip size means buying another module.
Category Rankings
How the Sig Sauer P320 XTEN 10mm ranks among full-size 10mm Auto handguns.
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Alternatives to Consider
Similar full-size 10mm Auto handguns ranked by similarity.
| NAME | BEST PRICE |
|---|---|
|
Glock G40 Gen4 MOS 10mm
Glock
|
— |
|
Springfield Armory XD-M Elite 10mm
Springfield Armory
|
— |
|
Smith & Wesson M&P M2.0 10mm
Smith & Wesson
|
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EAA Witness Steel 10mm
EAA
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— |
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Glock G20 Gen5 MOS 10mm
Glock
|
— |
Frequently Asked Questions
What optic footprint does the slide use?
Sig's PRO cut. A dot built to that pattern mounts directly into the slide, and other footprints need an adapter plate between the two.
What are XRAY3 sights?
Sig's day and night sight set, with a tritium lamp inside a high-contrast front ring and tritium in the rear notch, so the same sights work in daylight and in the dark.
Can the fire control unit move to another grip module?
Yes. On a P320 the stainless chassis is the serialized firearm, and the grip module around it is a separate part, so grip size and grip texture are both changeable without a new serial number.
Is there a manual safety version?
Sig builds manual-safety variants of the P320, but this configuration is listed without one.
