# Sig Sauer P320 X RXP 9mm Optics-Ready Striker-Fire Pistol

**Brand:** SIG Sauer
**Category:** Full Size Handguns
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4.7"
- **Capacity:** 17 rounds
- **Finish:** Black
- **Weight:** 29.6 oz
- **Overall Length:** 8.2"
- **UPC:** 798681621347
- **SKU:** UCE3nOgkd

## Description

The Sig Sauer P320 X Full Size RXP is a striker-fired 9mm pistol with a 4.7-inch barrel, optics-ready slide, and black Nitron finish. The frame is stainless steel, capacity is 17+1 rounds, and weight is 1.88 lbs (30 oz). The included Romeo1 Pro red dot mounts directly to the slide without an adapter.

### Key Specifications
- **Brand:** Sig Sauer
- **Model:** P320 X Full Size RXP
- **Caliber:** 9mm Luger (9x19 Para)
- **Action:** Striker Fire
- **Capacity:** 17 rounds + 1 in the chamber
- **Barrel Length:** 4.7 inches
- **Weight:** 1.88 lbs (30 oz)
- **Finish:** Black Nitron
- **Frame Material:** Stainless Steel

### Features
The optic-ready slide has a direct-mount cut for compatible red dots. XRAY3 night sights provide backup iron sight capability in low light when running the optic or as the primary sights without it. The black Nitron finish resists corrosion. The polymer grip frame is comfortable for extended range sessions. The P320 platform is modular. The serialized fire control unit moves between grip modules and calibers.

### Usage
Full-size optics-ready 9mm for range, competition, and home defense. The Romeo1 Pro inclusion means the gun is functional out of the box for red dot shooting. The 17+1 capacity is standard for full-size 9mm pistols.

## Frequently Asked Questions

**Q: What caliber is the P320?**

A: The P320 X Full Size RXP is chambered in 9mm Luger (9x19 Para).

**Q: Who makes the P320?**

A: The P320 is made by Sig Sauer.

**Q: What type of firearm is the P320?**

A: It is a full-size striker-fired pistol.

**Q: What is the barrel length of the P320?**

A: The barrel is 4.7 inches long.

**Q: How many rounds does the P320 hold?**

A: It has a 17+1 capacity.

**Q: Is the P320 optic-ready?**

A: Yes. The slide has a direct-mount cut for compatible red dots and comes with a Romeo1 Pro red dot included.

**Q: Where can I buy the P320?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> The gun is just flawless red dot not so much.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=Yx0O9SK44S0&t=370s)

> Not sold on it myself honestly at one point when it failed on me i wanted just to take red dot off this gun.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=Yx0O9SK44S0&t=692s)

> The 320s are very very accurate handguns probably one of the most accurate ones i can shoot and i do really like them.
>
> — [Hunt Fish Shoot](https://www.youtube.com/watch?v=Yx0O9SK44S0&t=705s)

## What Customers Say

*AI-generated insights from customer reviews*

The P320 X RXP gets consistently positive reviews. Versatility and the optics-ready setup are the most cited positives. The included Romeo1 Pro makes it a ready-to-run red dot pistol without additional cost. The P320 platform's modularity remains a major selling point: owners appreciate being able to change grip modules and reconfigure the fire control unit.

Ergonomics and trigger feel draw positive comments; the smooth break and clean reset translate well to both range practice and competitive use. Reliability across ammunition types is reported as solid.

Weight is mentioned as a limitation for carry. The full-size frame is not particularly concealable for daily use. Initial cost is discussed, with opinions split on whether the optic inclusion justifies the price. Some owners want to add upgraded accessories like holsters and are aware of additional costs.

Overall the feedback is positive, with the optic inclusion and platform versatility being the main draws.

## Pricing

**2 offers available**

| Vendor | Price |
|--------|-------|
| Guns Com | $875.99 |
| Guns Com | $979.99 |

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*Data from [GunsNation](https://gunsnation.com)*