Sig Sauer P320-XFULL: Precision Grip for Tactical Defense

When selecting a handgun for home defense or range proficiency, fit and control are as important as accuracy. A pistol that encourages a high, locked-in grip and offers straightforward optics integration takes the uncertainty out of stressful situations. This review breaks down how the P320 platform evolved into a full-size defensive workhorse that balances sighting, ergonomics, and modular adaptability for modern shooters.

SIG SAUER P320 X-Full X-Ray 3 is Sig Sauer’s full-size entry in the X series, built to deliver a steady, controllable shooting experience while remaining practical for carry and duty use.

Overview: Purpose-Built Full-Size Performance

The P320 X-Full X-Ray 3 is designed around a 4.7″ slide and barrel, which is long enough to improve sight radius and resulting accuracy while staying compact enough for practical carry. The X series takes the modular DNA of the P320 and refines it for users who prioritize recoil management and sighting speed. As a Semi Auto category pistol from Sig Sauer, this model ships standard with two 17-round magazines and a price point of $699.99, positioning it competitively for shooters who want a factory-ready package.

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Ergonomics & Grip: Built for a High, Controlled Hold

One of the X-Full’s strongest selling points is the grip module. The module is compatible with a removable magwell and grip weight, allowing shooters to tune balance and reload ergonomics without changing frames. The extended beavertail and deep undercut are deliberate ergonomic choices: they promote a higher purchase on the backstrap so your hand rides the bore axis. That translates to less muzzle flip, better follow-up shots, and increased confidence under stress.

Removable Magwell and Grip Weight

The removable magwell is a simple upgrade for faster, more reliable reloads — ideal for competitive drills or high-stress defensive transitions. Adding or removing the grip weight adjusts the pistol’s perceived recoil impulse and balance. These modular elements keep the X-Full adaptable for a range of applications from training to duty carry.

Sights & Optics: Ready for Red Dots and Low-Light Scenarios

The XRay3 day/night sights are a standout feature, providing high visibility across lighting conditions. That’s crucial for a defensive pistol where sight acquisition must be quick both in bright daylight and dim indoor environments. Beyond iron sights, the rear sight plate assembly accepts direct mounting of the Romeo1PRO optic and follows the PRO RX footprint. This native optic-ready platform minimizes plate swaps and machining complications, making the pistol straightforward to equip with a reflex sight for faster aiming.

Practical Optic Integration

Mounting a compatible red dot removes the need for perfect sight picture alignment under stress and speeds target transitions. For shooters who train with modern optic setups, the X-Full’s footprint saves time and reduces potential compatibility headaches.

Handling, Accuracy & Capacity

The 4.7″ barrel/slide combination gives the X-Full an advantage in accuracy over shorter-barreled counterparts, especially at typical defensive engagement distances. The extended sight radius improves point-of-aim consistency, and with the high grip geometry, recoil control becomes noticeably easier. Standard inclusion of two 17-round magazines provides a substantial defensive capacity straight from the box, useful for both range sessions and on-duty carry where higher magazine counts are preferred.

Recoil Management and Follow-Up Shots

Between the beavertail, undercut, and optional grip weight, this pistol is tuned for quick follow-ups. Whether you run drills at the range or rely on the pistol for home defense, the ergonomics encourage faster and more accurate strings of fire.

Accessories, Upgrades, and Practical Considerations

The X-Full is compatible with many P320 aftermarket components, but its factory offerings reduce the need for immediate upgrades. The optics-ready rear plate, removable magwell, and grip-weight options are practical additions that let users customize function before spending on aftermarket parts. For those who appreciate a clean, ready-to-run firearm, the included XRay3 sights and the ability to mount a Romeo1PRO make the X-Full a strong out-of-the-box contender.

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Who Should Choose the P320 X-Full X-Ray 3?

Shooters who value a full-size pistol with modern ergonomics, native optics capability, and higher magazine capacity will find this Sig Sauer model especially appealing. It’s a practical choice for trainers, home-defense-minded owners, and professionals who want modular options without extensive aftermarket modification. The balance of a 4.7″ barrel, XRay3 sights, and the modular grip features make it a versatile platform across use cases.

At a retail price of $699.99, the X-Full presents a factory-ready option that includes key upgrades most buyers add aftermarket. The combination of a longer slide, optics compatibility, enhanced grip geometry, and two 17-round mags creates a package that’s both capable and configurable.

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People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.