Description
The Sig Sauer P320 X-Full 9mm 4.7in Optic-Ready, 2×10-Rd delivers a full-size, modular platform built for shooters who demand precision and adaptability right out of the box. This striker-fired pistol pairs a 4.7-inch slide and barrel with the XGrip module and XRay3 day/night sights, giving you dependable sighting in any light. The optic-ready slide accepts common reflex footprints, and it ships with two 10-round steel magazines. At $729.99, it’s a serious tool for serious work.
| Manufacturer | Sig Sauer (per manufacturer specs) |
|---|---|
| Model | P320 X-Full |
| Material | Stainless steel slide, polymer XGrip module |
| Compatibility | P320 full-size holsters and accessories |
| Finish | Nitron (per manufacturer specs) |
| Weight | 29.6 oz (with empty magazine) |
| Condition | New |
Key Features
- Optic-Ready Slide — Why it matters: You can mount a red dot without sending the slide to a machine shop, saving time and keeping your zero consistent.
- XRay3 Day/Night Sights — Why it matters: Tritium inserts and a bright front ring let you acquire your sight picture in dawn, dusk, or total darkness without batteries.
- XGrip Module — Why it matters: The contoured texture and extended beavertail give you a higher, more consistent grip for faster follow-up shots and better recoil control.
- Two 10-Round Steel Magazines — Why it matters: You get two factory magazines out of the box, so you can run drills or carry a spare without an extra purchase.
- Modular Striker-Fired Chassis — Why it matters: Swap grip modules in seconds to fit your hand size or change calibers later—this gun grows with you.
Who It’s For
This pistol is built for the shooter who wants a full-size duty or range gun with modern features. You’re the guy who practices weekly, competes occasionally, or carries a full-size on duty. If you’re already running a red dot on other pistols and want one that’s ready to mount without an adapter plate, this fits. It also suits left-handed shooters—the slide catch is ambidextrous, and the magazine release is reversible.
Pros / Cons
- Pros: Factory optic cut works with most popular footprints (RMR, DeltaPoint Pro, Romeo1Pro). XRay3 sights are usable without a dot. Modular grip lets you customize fit and feel. Steel magazines drop free and lock back reliably. Price point undercuts many comparable full-size optics-ready pistols.
- Cons: The factory trigger has a bit of take-up before the wall—some shooters prefer a crisper break out of the box. If you’re used to a tuned 1911 trigger, you’ll want to swap in an aftermarket trigger kit.
Comparison vs. Competitors
| Feature | Sig Sauer P320 X-Full | Zev Technologies OZ9 | Agency Arms Agency Premier |
|---|---|---|---|
| Optic Ready | Yes (multiple footprints) | Yes (RMR/Holosun) | Yes (RMR) |
| Magazine Capacity | 10 rounds (2 mags included) | 17 rounds (2 mags included) | 17 rounds (1 mag included) |
| Barrel Length | 4.7 inches | 4.5 inches | 5.0 inches |
| Modular Grip | Yes (XGrip, interchangeable) | Yes (Zev grip module) | No (fixed grip) |
| Price | $729.99 | $1,499.99 | $2,495.00 |
| Warranty | Limited lifetime | Limited lifetime | 1 year |
Frequently Asked Questions
Does the Sig Sauer P320 X-Full come with a red dot optic?
No, the pistol does not include a red dot optic. The slide is cut to accept common reflex footprints (RMR, DeltaPoint Pro, Romeo1Pro), so you can mount your own dot directly without an adapter plate.
What holsters work with the P320 X-Full?
Any full-size P320 holster that accommodates a 4.7-inch slide will fit. Look for models with an open muzzle or one that clears the XGrip module’s extended beavertail. Brands like Safariland, Blackhawk, and Vedder make compatible options.
Can I use standard P320 magazines in this gun?
Yes. The X-Full accepts all P320 full-size magazines, including 17- and 21-round factory mags. The included 10-round magazines are compliant for restricted states.
Is the P320 X-Full suitable for concealed carry?
It’s a full-size pistol with an 8.2-inch overall length and 29.6 oz weight. While it can be carried with a quality belt and holster, most shooters prefer a compact or subcompact for daily concealment. This gun excels as a duty, home defense, or competition pistol.
What is the trigger pull weight on the X-Full?
Per Sig Sauer specs, the factory trigger pull is approximately 5.5 to 6.5 pounds. The trigger has a defined wall and a short reset, but some shooters note a bit of take-up before the break.
According to industry data, the P320 platform accounts for over 40% of Sig Sauer’s handgun sales in the US, making it one of the most popular striker-fired lines on the market. This X-Full model gives you the full-size experience with modern optics readiness at a price that won’t break your budget.
✓ Nationwide delivery (all 50 states) | ✓ Ships 1-2 business days | ✓ 30-day returns | ✓ Secure checkout
Last updated: April 2026
Browse more: Semi Auto Handguns | Sig Sauer | Optics-Ready Pistols
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