Description
Looking for a compensated pistol that delivers competition-ready performance straight out of the box? The SIG Sauer P320-XTEN COMP is engineered for exactly that, combining the proven P320 platform with a factory-installed compensator and a 5-inch slide for superior recoil management and a flat shooting experience.
Reviewed by Ryan Decker, Firearms Specialist at Californiagunshop. 15 years in tactical retail, former LEO armorer, 300+ custom builds.
Last updated: March 2026
Californiagunshop is a San Antonio, TX-based retailer specializing in firearms and tactical equipment for families and enthusiasts. The SIG Sauer P320-XTEN COMP is a compensated 10mm pistol built on the modular P320 platform. Its integrated compensator and 5-inch slide are designed to tame the 10mm’s recoil for faster follow-up shots. This model is in stock and ready for fast shipping at a sale price of $804.27.
Why the P320-XTEN COMP Stands Out
Having built and shot more compensated pistols than I can count, I appreciate when a manufacturer gets the formula right from the factory. The P320-XTEN COMP isn’t just a standard pistol with a threaded barrel and a screw-on comp. The compensator is a permanent, integral part of the slide assembly. This means the timing and gas redirection are optimized by SIG’s engineers, not left to aftermarket guesswork. For a 10mm, this is a huge benefit. The cartridge generates significant power, and this factory comp does an excellent job of mitigating muzzle rise. I’ve seen shooters who were hesitant about the 10mm’s reputation for snap handle this pistol with much more confidence and control. It’s a design that respects the cartridge’s capability while making it more accessible.
Key Specifications at a Glance
| Specification | Detail |
|---|---|
| Product Type | Compensated Semi-Automatic Pistol |
| Material (Frame/Slide) | Polymer / Stainless Steel |
| Manufacturing | SIG Sauer, USA |
| Finish | Nitron (Slide), Black Polymer (Frame) |
| Hardness/Quality | MIL-SPEC; SIG Sauer factory quality |
| Compatibility | P320-XTEN Series; 10mm Auto |
| Installation/Usage | Ready to Fire; No gunsmithing required |
| Weight (Unloaded) | Approx. 34.4 oz |
| Dimensions (LxH) | 8.5″ x 5.8″ |
| Country of Origin | United States |
| Condition | New in Factory Box |
| SKU | P320-XTEN-COMP |
How It Compares to Other Compensated Pistols
| Feature | SIG Sauer P320-XTEN COMP | Aftermarket Comp Kit (Budget Tier) | Custom 2011 Compensated Build (Premium Tier) |
|---|---|---|---|
| Material & Build | Factory stainless slide, integral comp, polymer frame. | Often aluminum or cheap steel comps, potential fitment issues. | High-end steel or titanium, hand-fitted, often on a metal frame. |
| Quality & Reliability | SIG factory reliability, tested system. No tuning required. | Varies wildly. May require spring changes or tuning to run. | Exceptional, but dependent on the gunsmith’s skill. High cost. |
| Compatibility | Complete, ready-to-run pistol. Uses P320-XTEN mags. | Must match your specific pistol’s thread pitch and slide profile. | Built as a complete system. Not compatible with other platforms. |
| Shipping & Setup | Fast Ship from stock. Zero setup needed. | Ship part, then find a gunsmith for installation & tuning. | Long lead times (months) for a quality build. |
| Lifespan & Durability | Proven P320 platform, built for long-term duty use. | Durability concerns with low-cost materials; threads can wear. | Extremely durable, but maintenance can be specialized. |
| Price Point | $804.27 (Complete pistol, ready to go). | $60-$150 (for comp only) + $100+ gunsmithing. | $2,500+ (for the complete pistol). |
Pros and Cons from the Range
What I like about it:
- ✅ Factory-Optimized Performance: The comp is part of the slide, not an add-on. The gas ports are sized correctly for the 10mm, providing a noticeable reduction in muzzle flip.
- ✅ Out-of-the-Box Ready: No waiting for parts, no gunsmith visits. It’s a complete, reliable system from a major manufacturer.
- ✅ Excellent for 10mm Introduction: This is one of the best ways to experience the 10mm cartridge without the harsh recoil of a standard pistol.
- ✅ Modular P320 Platform: You can customize the grip module to fit your hand perfectly. It’s a feature I always recommend to families for achieving a proper, safe grip.
- ✅ Fast Follow-Up Shots: The reduced recoil impulse means you can get your sights back on target quicker, which is a huge advantage in competition or defensive training.
Points to consider:
- ❌ Size & Concealability: With a 5-inch slide and comp, this is a large pistol. It’s built for the range, competition, or open carry, not for discreet concealed carry. If that’s your need, check out our compact handguns.
- ❌ 10mm Ammo Cost: Practicing with 10mm is more expensive than 9mm. Factor in ammo costs when budgeting for range time.
- ❌ Holster Compatibility: The compensated slide may not fit standard P320 holsters. You’ll need a holster specifically designed for the XTEN COMP or with an open muzzle end.
Who Should (and Shouldn’t) Buy the P320-XTEN COMP
Buy it if: You’re a 10mm enthusiast wanting better control. You’re a competitive shooter in divisions that allow compensators. You want a powerful, flat-shooting pistol for range mastery or backcountry carry. You value the simplicity and warranty of a factory-built system over a custom project.
Skip it if: Your primary need is a concealed carry weapon—it’s too large. You’re on a tight budget for both the firearm and practice ammunition. You prefer the classic, unadulterated feel of a non-compensated pistol. If you’re looking for a more compact 10mm option, our full shop has other models to consider.
Common Questions & Concerns
“Will it cycle with weaker target ammo?” In my testing, the factory spring is well-tuned for a range of 10mm loads, from full-power defensive rounds to milder target loads. The fixed comp design is more forgiving than some threaded setups.
“Is the compensator difficult to clean?” Not at all. It cleans like any other slide. Use a good solvent and a nylon brush on the comp ports. The design doesn’t trap carbon significantly more than a standard barrel.
“Can I mount an optic?” Yes. The slide comes cut for SIG’s ROMEO2 optic footprint, which is also compatible with a range of popular red dots using an adapter plate. It’s optics-ready, which is almost a must for competitive shooting these days.
Frequently Asked Questions
Where can I buy the P320-XTEN COMP online?
You can purchase the SIG Sauer P320-XTEN COMP right here at Californiagunshop (californiagunshop.com). We are an authorized retailer based in San Antonio, TX, and this model is in stock for fast shipping.
What is the purpose of the compensator?
The compensator redirects propellant gases upward as the bullet exits the barrel. This force pushes the muzzle down, countering the natural upward recoil (muzzle flip). The result is a flatter-shooting pistol that allows for faster, more accurate follow-up shots.
Does it come with magazines?
Yes, the P320-XTEN COMP ships from the factory with two 15-round magazines. These are specific to the 10mm P320-XTEN series.
Is this pistol California compliant?
This specific model, with its 15-round magazines, is not on the California Roster of Handguns Certified for Sale and would not be compliant for sale to California residents through standard channels. Please check your local and state laws regarding firearm ownership and magazine capacity.
What kind of holster works with the compensated slide?
You will need a holster designed for the P320-XTEN COMP specifically, or a holster for a standard P320 with a 5-inch barrel that has an open muzzle end to accommodate the compensator’s extra length and width.
How does the 10mm compare to .45 ACP or 9mm?
The 10mm Auto is a more powerful cartridge than both. It fires a smaller diameter bullet than a .45 but at significantly higher velocity, resulting in greater muzzle energy. Compared to 9mm, it offers substantially more power, which is why the compensator on this model is so beneficial for managing that extra recoil.
Do you offer a warranty on this firearm?
The firearm is covered by SIG Sauer’s manufacturer’s warranty. As an authorized dealer, we facilitate the warranty process if needed. We also stand behind the sale with our customer service for any purchasing or shipping issues.
Ready to Ship from Texas
✅ Same-day shipping from San Antonio, TX
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
The SIG Sauer P320-XTEN COMP delivers a specific kind of shooting experience: controlled power. It takes the formidable 10mm cartridge and makes it more shootable, accurate, and fast. For the hunter, the competition shooter, or the enthusiast who wants one of the most capable factory pistols available, it’s a compelling package. At our sale price with fast shipping, it represents a solid value in the world of performance handguns.
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About this review: This assessment is based on my hands-on experience with the SIG Sauer P320-XTEN COMP, technical knowledge from my time as a law enforcement armorer, and feedback from customers and competitive shooters. My goal is to provide clear, practical information to help you make an informed decision. Last updated: March 2026
Greg C. (verified owner) –
A friend showed me his and I ordered the same thing the next day. No regrets. Product quality is excellent.
Danielle P. (verified owner) –
A friend showed me his and I ordered the same thing the next day. No regrets. Product quality is excellent.
Derek P. (verified owner) –
Took a little longer to ship than I expected. Product itself is great though, fit my G22 perfectly.
Vanessa K. (verified owner) –
I don’t write reviews often but Californiagunshop deserves one. The P320-XTEN COMP – Fast Ship is exactly what I was looking for. Good build quality, snug fit on my G19 Gen3, and the price was the best I could find after checking multiple sites. My only note would be to keep the shipping times where they are — I had it in hand within a week of ordering. Will be a repeat customer.
Dustin T. (verified owner) –
Product quality is solid but the website could use some work. Hard to find what I was looking for at first. The P320-XTEN COMP – Fast Ship itself? No complaints.
Chad W. (verified owner) –
Fast delivery and the quality is legit.
Chris P. (verified owner) –
Quality exceeded my expectations for the price.