Sig Sauer XFULL-SIZE: Optic-Ready Semi Auto for Defense

Selecting a duty-grade, optic-ready semi-auto for personal defense is part science and part craft. You want a platform that balances sighting options, a predictable trigger, and magazine capacity you can trust when it matters most. Training, ergonomics, and a pistol’s mechanical features determine how effectively you can deploy it under stress.

SIG SAUER P320 RXP XFULL-SIZE is a purpose-built full-size striker-fired pistol engineered for operational use. It delivers the Straight XSeries Trigger for a clean, straight 90-degree break, a nitron coated, optic-ready slide with a removable night sight plate, and an X-Ray3 front night sight. The slide’s XSeries enhanced serrations improve grip when manipulating the slide, and the package includes two (2) 17‑round steel magazines. Shop this product

Key features that matter on duty and at the range

The modern defensive pistol needs a crisp trigger, reliable sights, and an interface that supports rapid, confident reloads. SIG SAUER built the SIG SAUER P320 RXP XFULL-SIZE with those priorities front and center. The Straight XSeries Trigger produces a 90-degree break that feels deliberate and repeatable—valuable for shooters refining trigger press consistency. The nitron-coated slide resists corrosion and wear, while being optic-ready out of the box. A removable night sight plate enables co-witnessing with optics or swapping to a red dot without extra machining.

Slide design and sighting options

The optic-ready slide means you can mount a compatible reflex sight cleanly and quickly. If you prefer irons, the X-Ray3 front night sight provides a high-visibility aiming point in low light. The removable night sight plate keeps options open for operators who need to transition between red dot and iron sight configurations. Enhanced XSeries slide serrations offer positive purchase for charging or press checks even with sweaty hands or gloves.

Trigger and ergonomics

A straight, 90-degree trigger break changes how you train and shoot. That geometry encourages a straight-back trigger press, minimizing lateral movement that can upset follow-up shots. The grip and controls on this full-size chassis support a two-handed hold for adults of varying hand sizes and create a stable platform for precision or defensive work. Included two 17-round steel magazines give you a high baseline capacity for training or duty use without immediately buying extra magazines.

Magazine capacity and field use

Two (2) 17-round steel mags are supplied with the SIG SAUER P320 RXP XFULL-SIZE, which translates to longer strings between reloads and more time to manage a stressful encounter. Steel magazines are durable and feed reliably under heavy use, and the factory-supplied capacity places this platform squarely in the full-size defensive category. If you’re building a training plan, start with magazine changes and immediate action drills using the included mags to develop speed and reliability.

Materials, finish, and durability

The pistol’s nitron-coated slide is a practical choice for frequent carry or range exposure; it reduces corrosion and maintains a low-reflective finish. XSeries enhanced serrations are cut to give tactile purchase without creating snag points—important for drawing from a holster or manipulating the slide with gloves. Sig Sauer’s reputation for robust engineering applies here: the platform is designed with operational durability in mind while remaining serviceable for recreational shooters.

Training considerations

Work the Straight XSeries Trigger slowly at first. Dry-fire until your trigger press is a straight-back movement ending at a clean 90-degree break. Pair that with sighted fire, then progress to controlled pairs and recoil management. Because the SIG SAUER P320 RXP XFULL-SIZE is optic-ready, include red-dot transition drills in your routine so you can acquire a dot quickly, then revert to irons if needed.

For ammunition selection and caliber-specific tactics, follow your local laws and best-practice defensive ammo choices. The pistol’s platform accepts standard defensive loads and performs consistently when maintenance and training are prioritized.

View product details and pricing to confirm current stock and to compare configurations. The listed price for this configuration is $979.99, reflecting the optic-ready slide, night sight options, and the included pair of 17-round steel magazines.

Who benefits most from this platform?

Professional users and serious civilian shooters who value an optic-ready, full-size frame will find this pistol well-suited to defensive roles and competition training. The combination of a Straight XSeries Trigger, enhanced slide serrations, and a removable night sight plate gives the shooter flexibility to outfit the pistol for their preferred sighting system. If you want a full-size workhorse that leaves room for customization, this model is worthy of consideration.

Maintenance and accessory compatibility

Routine maintenance—cleaning the nitron-coated slide and inspecting the XSeries components—will keep the system reliable. The optic-ready slide accommodates commonly used red dots designed for Sig-pattern plates; confirm your chosen plate compatibility before purchase. The two supplied steel magazines are a solid foundation, and aftermarket extensions or magwells can be fitted if your training or recoil management needs evolve.

Deciding factors at purchase

When evaluating the SIG SAUER P320 RXP XFULL-SIZE, weigh the included features—optics-ready slide, removable night sight plate, X-Ray3 front sight, XSeries trigger, enhanced serrations, and two 17-round steel mags—against your training plan and carry method. The $979.99 price point reflects an out-of-the-box capability that reduces immediate aftermarket spending on sighting solutions. Confirm availability and any accessory bundles on the shop page before finalizing a purchase.

Those ready to move from research to acquisition can Check current availability on the product page, where you can view images, specifications, and complete the purchase through the retailer.

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.