Sig Sauer P320 Xten 10MM 5 Optic Ready Manual Safety

About this product

The Sig Sauer P320-XTEN brings the power of 10mm Auto to Sig's modular P320 platform, pairing a 5-inch bull barrel with an optics-ready slide and an available manual safety for shooters who want a full-size, hard-hitting pistol for hunting, backcountry defense, or competition.

Why chamber a P320 in 10mm?

10mm Auto sits well above 9mm and .40 S&W in energy, historically favored by hunters and backcountry carriers who want more penetration and stopping power against larger game or dangerous animals, while still running in a semi-automatic, magazine-fed platform. The XTEN takes the proven P320 architecture — the same modular fire-control unit and general ergonomics found across Sig's P320 lineup — and scales the frame, slide, and barrel up to handle 10mm pressures reliably.

What are the core specs of the XTEN?

The pistol uses a 5-inch bull barrel for both accuracy and improved recoil management in a caliber known for sharper recoil impulses, with a 15+1 magazine capacity that is notably higher than most 10mm pistols on the market, many of which top out closer to 8 or 10 rounds. The slide ships optics-ready, cut for red dot mounting, and comes with XRAY3 day/night sights as a backup or standalone sighting system. A manual safety variant is available for shooters who prefer that extra mechanical layer over a standard striker-fired trigger safety alone.

At roughly 33 ounces with a magazine, the XTEN carries meaningful heft that helps offset 10mm's recoil, though it is still built as a full-size duty-style pistol rather than a lightweight carry gun.

Who is the P320-XTEN built for?

This pistol targets hunters, backcountry hikers concerned about dangerous game, and 10mm enthusiasts who want higher magazine capacity than most 10mm options provide. It is not primarily marketed as a concealed-carry gun given its size, though some shooters do carry full-size pistols for outdoor use in bear country. Owners already familiar with other P320 variants will find the manual of arms and trigger identical, since the XTEN shares the same modular fire-control unit as the rest of the line.

Ammunition selection matters for 10mm more than for many other pistol calibers, since factory loads range widely from lighter, softer-shooting defensive rounds to full-power hunting loads pushing heavier bullets at higher velocities. New 10mm shooters often start with lighter-recoiling practice ammunition before working up to full-power hunting loads once they are comfortable with the pistol's recoil impulse. Holster options built specifically for full-size, optics-equipped 10mm pistols are more limited than for a compact 9mm, so factor that into your setup if you plan to carry the XTEN afield.

Because the P320 platform uses a removable, serialized fire-control unit as the actual firearm, owners familiar with the system already understand how grip modules and calibers can be swapped on compatible frames, though the 10mm-specific components on the XTEN are generally not interchangeable with smaller-caliber P320 grip modules.

As a firearm, this pistol ships to a licensed FFL dealer for the required transfer and background check, not to your home address. California requires new handgun models to be listed on the state's approved roster before they can be sold by a licensed dealer here. Roster status changes over time, so confirm with your FFL that this exact model and configuration is currently approved before you place an order.