The SIG Sauer P320-XFULL is a full-size, optics-ready striker-fired pistol built for competition and duty use. It features a flat-faced trigger, extended beavertail, and high-capacity magazines. Since we started stocking it in summer 2025, it has become a steady seller for shooters who demand a ready-to-run platform. Our staff confirms it works with both factory and popular aftermarket sights.
Key Features
- Optics-ready slide with SIG Sauer’s XSeries mounting system.
- Flat-faced XSeries trigger for a consistent, crisp break.
- Full-size grip module with extended beavertail for high-hand control.
- High-visibility XRAY3 Day/Night sights co-witness with optics.
- Comes with two 17-round magazines and a polymer case.
Specifications
| Model | P320-XFULL |
| Caliber | 9mm |
| Barrel Length | 4.7 in |
| Overall Length | 8.0 in |
| Height | 5.5 in |
| Weight (measured) | 5.6 oz |
| Sights | XRAY3 Day/Night |
| Magazine Capacity | 17+1 |
Frequently Asked Questions
Is the slide cut for a specific optic footprint?
The slide uses the SIG Sauer XSeries mounting system. It comes with adapter plates for common footprints like the ROMEO1PRO and Leupold DeltaPoint Pro. Check compatibility for your specific optic model.
What aftermarket sights are compatible?
Our staff has confirmed compatibility with popular models from Trijicon and AmeriGlo. The slide uses standard SIG dovetail cuts for the rear sight.
Does it include a manual safety?
This model is configured as a standard fire-control unit without a manual safety. The trigger safety blade is the primary drop safety.
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