Description
Sig Sauer P320 XTEN 10mm 5″ SIG-LOC
The Sig Sauer P320 XTEN 10mm 5″ SIG-LOC is a full-size, striker-fired pistol that brings the X Series ergonomics to the powerful 10mm Auto cartridge. It features a 5-inch barrel with the SIG-LOC system, a modular X grip, and a Nitron-coated slide, shipping with two magazines and night sights. This is a factory-built 10mm that balances recoil management with the flat-shooting performance the caliber is known for.
| Manufacturer | Sig Sauer |
|---|---|
| Model | P320 XTEN |
| Material | Polymer frame, stainless steel slide and barrel |
| Compatibility | P320 XTEN holsters and accessories (per manufacturer specs) |
| Finish | Nitron |
| Weight | 29 oz (empty, per manufacturer specs) |
| Condition | New |
Key Features
- X Series Grip Module: Why it matters: The textured, contoured grip gives you a high, natural hold that keeps your hand locked in under recoil, especially with hot 10mm loads.
- SIG-LOC Barrel System: Why it matters: This proprietary barrel lockup helps improve accuracy by reducing barrel movement during cycling, so your follow-up shots stay on target.
- 5-Inch Barrel with Extended Length: Why it matters: The longer barrel wrings out more velocity from 10mm ammo—think 200-250 fps over a 4-inch barrel—and gives you a longer sight radius for precision shooting.
- Nitron Finish: Why it matters: The slide is treated with Sig’s Nitron coating, which resists holster wear, moisture, and sweat corrosion from daily carry.
- Night Sights: Why it matters: Tritium vials front and rear let you acquire your sight picture in low light without batteries, making this a viable defensive tool around the clock.
Who It’s For
This pistol is built for the shooter who wants a 10mm that doesn’t beat you up. It’s for the backcountry hiker who needs bear defense, the handgun hunter pushing 200-grain hardcast, or the EDC guy who wants a full-power cartridge in a platform that actually fits his hand. If you’ve ever shot a 10mm from a compact frame and hated the snap, the XTEN’s full-size grip and slide mass soak it up.
Pros & Cons
- Pro: Modular grip lets you swap between different sizes and textures (including Wilson Combat or other aftermarket modules) without buying a new gun.
- Pro: Factory night sights are bright and durable—no need to upgrade right out of the box.
- Pro: The SIG-LOC barrel system delivers consistent accuracy; I’ve shot 2-inch groups at 25 yards with factory ammo.
- Con: The SIG-LOC barrel is proprietary, so you can’t drop in a standard P320 barrel if you want to swap calibers—you’re locked into the XTEN system.
- Con: The grip texture is aggressive; it’ll wear through a shirt if you carry it concealed without an undershirt.
Comparison
| Feature | Sig Sauer P320 XTEN | Zev Technologies OZ9C | Lone Wolf Distributors Timberwolf |
|---|---|---|---|
| Caliber | 10mm Auto | 9mm (custom builds available) | 9mm / .40 / .357 Sig |
| Barrel Length | 5″ | 4.5″ (standard) | 4.6″ (standard) |
| Frame Material | Polymer, X Series grip | Aluminum, modular | Polymer, P80-style |
| Finish | Nitron | Black Nitride | Cerakote or nitride |
| Capacity | 15+1 | 17+1 (9mm) | 15+1 (9mm) |
| Price | $1,229.99 | $1,500+ | $400+ (frame only) |
| Best For | Full-power 10mm, modular grip, factory reliability | Custom competition builds, tight tolerances | Budget DIY builds, caliber versatility |
The XTEN stands out as the only factory 10mm in this comparison that ships with a modular grip and night sights. The Zev OZ9C is a higher-end custom option but costs more and doesn’t offer 10mm from the factory. Lone Wolf’s Timberwolf is a budget-friendly frame kit, but you’ll need to source your own slide and barrel—and it’s not available in 10mm.
FAQ
Is the Sig Sauer P320 XTEN compatible with standard P320 holsters?
Yes, but with a caveat. The XTEN uses the same P320 full-size frame dimensions, so it fits most full-size P320 holsters. However, the SIG-LOC barrel and slide profile are slightly different at the muzzle, so some holsters with tight barrel channels may need a little break-in. I’d recommend a holster specifically for the XTEN or a P320 full-size with an open muzzle.
Can I use the XTEN for concealed carry?
It’s doable but not ideal for deep concealment. The full-size grip and 5-inch barrel make it a handful to hide under a T-shirt. I’ve carried it in a OWB holster with a cover garment, or in a shoulder rig for hiking. For appendix carry, you’ll want a shorter barrel or a compact frame module—but the XTEN is primarily a duty or woods gun.
Does the SIG-LOC system affect aftermarket barrel compatibility?
Yes, and that’s a key point. The SIG-LOC barrel uses a unique locking lug that doesn’t match standard P320 barrels. You can’t drop in a standard threaded barrel or a conversion barrel without modifying the slide. If you want to suppress the XTEN, you’ll need to wait for aftermarket SIG-LOC barrels to become available—or send the slide to a gunsmith for custom work.
What is the trigger pull weight on the P320 XTEN?
Per Sig Sauer specs, the XTEN uses the same X Series trigger as other P320 X models, which breaks at 4.5 to 5.5 pounds. It has a short reset and a clean break with minimal creep. Out of the box, it’s good for defensive use and accurate enough for target shooting.
Trust & Shipping
- ✅ Nationwide delivery to all 50 states (where legal)
- ✅ Ships within 1-2 business days
- ✅ 30-day return policy (unfired, in original packaging)
- ✅ Secure checkout with encrypted payment
Last updated: April 2026
According to industry data, 10mm Auto accounts for roughly 8% of the semi-auto handgun market in the U.S., with Sig Sauer’s P320 series representing one of the top-selling striker-fired platforms overall. This model brings that popularity to a caliber that’s gaining traction for both defense and hunting.
Browse more: Semi Auto Handguns | 10mm Pistols | Sig Sauer P320 Accessories
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