Sig Sauer XFULL-SIZE: Precision-Shot 9mm Pistol Excellence

As a pair of longtime shooters who value precision, reliability, and real-world ergonomics, we approach new pistols the way we approach a mission: methodical, focused, and honest. Whether you’re choosing a duty sidearm, a competition platform, or a reliable range gun, understanding how a pistol’s design choices affect performance under stress is essential.

SIG SAUER P320 RXP XFULL-SIZE is a striker-fired service-style pistol built to deliver a crisp trigger break, robust slide features, and ready-to-run optics capability straight out of the box.

For those ready to evaluate or purchase, Shop this product and see specifications and pricing on the retailer page.

Overview: What the P320 X Full Size Brings to the Table

The P320 X Full Size continues SIG Sauer’s push to combine modularity with race-ready ergonomics. In this configuration the pistol emphasizes a straight, predictable trigger pull and a slide built for accessory optics and enhanced control. It ships with two (2) 17-round steel magazines and carries a retail price of $979.99 — positioning it as a premium factory-configured pistol for shooters who want advanced features without immediate aftermarket modifications.

Design & Ergonomics

Frame and Grip Geometry

The X Full Size frame inherits the P320’s modular chassis concept, which means a consistent, repeatable trigger relationship and the ability to adapt to different slides and grips if you choose to change configurations later. The grip angle and beavertail profile promote a high, natural purchase—important for quick follow-up shots and consistent sight alignment. For anyone who spends time teaching fundamentals or logging range sessions, that natural pointability reduces training baggage and improves muscle memory.

Slide Treatment and Serrations

One of the most tangible upgrades on this model is the nitron-coated, optic-ready slide. Nitron finish offers corrosion resistance and a matte, low-reflective surface that reduces glare. The slide also features XSeries enhanced slide serrations that are deeper and more aggressive than standard serrations—this isn’t just cosmetic. Under wet or gloved conditions, those serrations allow confident manipulation for reloads, press checks, and emergency malfunctions.

Trigger & Controls

Where the P320 X Full Size separates itself is the Straight XSeries Trigger, engineered for a clean, straight 90-degree break. This is a departure from curved or heavily stacked triggers and aims to put the shooter’s finger in-line with the bore axis for predictable resets and consistent application of force. For precision shooting or competitive strings, a straight, crisp break reduces lateral pull and helps tighten groups without adding a learning curve.

Sights, Optic Readiness, and Night Visibility

The slide is optic ready and includes a removable night sight plate, allowing you to mount a compatible micro red-dot without milling the slide yourself. The inclusion of an X-Ray3 front night sight provides a bright aiming reference for low-light scenarios. That combination—optic-ready slide plus a high-visibility front sight—gives shooters the flexibility to run iron sights, a dot onboard, or both depending on mission requirements.

Magazine Capacity and Field Use

Two 17-round steel magazines are included, offering substantial capacity for defensive scenarios, training, or competition stages. Steel mags provide durability, reliable feed geometry, and predictable spring characteristics over time. For shooters who train frequently, the included pair means you’re ready to run immediate magazine drills without additional purchases.

Performance and Practical Applications

This platform is well-suited to a range of roles: duty carry, competition, defensive training, and range work. The combination of a straight XSeries trigger and optic-ready slide makes the pistol a compelling option for shooters transitioning to red-dot-equipped sidearms. The nitron finish and enhanced serrations are tangible benefits for users in variable weather or operational environments where corrosion resistance and reliable handling matter.

Midway through evaluating any pistol it’s smart to verify parts compatibility and holster fit. If you want to confirm fitment or purchase accessories, View product details and pricing on the shop page linked here.

Maintenance, Accessories, and Upgrades

Cleaning and Longevity

The nitron coating reduces corrosion risk but does not eliminate routine maintenance. Regular inspections of slide rails, barrel hood contact, and magazine spring tension will keep the X Full Size running reliably. The modular chassis allows the pistol to be serviced with standard P320 parts where applicable.

Accessories and Holster Considerations

Because the slide is optic ready, plan holster purchases accordingly—either a holster that accepts the mounted optic or one that requires the optic plate removed. The included removable night sight plate allows for quick change between optic-ready and iron-sight-only configurations, offering flexibility for cross-draw or competition holsters.

Final Assessment and Buying Guidance

For shooters who prioritize a crisp, straight trigger break, optic readiness, and a robust slide treatment, the P320 X Full Size is a coherent package: a nitron-coated slide, Straight XSeries Trigger with a 90-degree break, XSeries enhanced slide serrations, a removable night sight plate paired with an X-Ray3 front night sight, and two 17-round steel magazines. At $979.99, it sits in a price band that reflects its factory-equipped features and out-of-the-box readiness.

If you’re ready to pick one up or compare fitment options, Check current availability on the product page where you can complete a purchase through the retailer. Train smart, maintain the pistol properly, and let the platform’s features serve purposeful shooting objectives.

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.