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The P320 XCompact has been one of the most popular configurations in Sig's modular P320 lineup since it launched, and for good reason. It threads the needle between compact enough to carry daily and capable enough to shoot seriously. The 3.6-inch barrel sits on the XSeries slide with front and rear serrations, and the whole gun weighs in at 25.5 ounces loaded. The XCompact grip module features a fastback carry cut at the rear that reduces printing under a cover garment, a low-profile internal magwell for smooth reloads, an extended beavertail for a high and consistent grip, and a deep undercut trigger guard that gets your hand up close to the bore axis. All of that adds up to better recoil control and a more natural shooting grip than you typically get out of a compact pistol.
This specific model ships with Sig's ROMEO-X Pro already installed and zeroed on the slide. That matters more than it sounds. The ROMEO-X Pro uses a 7075 aircraft-grade aluminum housing and mounts directly to the DeltaPoint Pro footprint on the XCompact slide with no adapter needed. It features a side-loading CR1632 battery compartment so you can swap a battery without pulling the optic or breaking your zero, and Sig's MOTAC motion-activation technology delivers up to 20,000 hours of runtime while keeping the dot ready to go whenever the gun moves. The ultra-low deck height lets the XRAY3 night sights co-witness cleanly, so you have a fully functional iron sight backup at all times. With 15 brightness settings including night-vision-compatible modes, this optic covers a lot of ground.
The XSeries straight (flat) trigger gives you a clean 90-degree break that a lot of people find more consistent than a curved trigger, especially under stress. The mag release is reversible for left-handed shooters, and the extended ambidextrous slide catch lever is a real quality-of-life upgrade for anyone running the gun hard. The Nitron-finished stainless steel slide and carbon steel barrel are built to handle regular carry and range use without babying. The M1913 Picatinny rail up front gives you the option to run a weapon light or laser as well.
Holster availability is excellent for this platform, and the aftermarket parts ecosystem for the P320 is one of the deepest in the striker-fired pistol world. Whether this is a dedicated carry gun, a home defense pistol, or a competition-ready Carry Optics setup, the XCompact with the ROMEO-X Pro gives you a lot of capability without requiring you to buy and mount anything extra.
Yes. This model ships with the ROMEO-X Pro factory-installed and zeroed directly to the slide's DeltaPoint Pro footprint. You can take it to the range and confirm zero, but you're not starting from scratch. Sig designed the slide specifically around this optic, so there's no adapter plate needed.
Absolutely. The ROMEO-X Pro is designed with an ultra-low deck height that allows the XRAY3 day/night sights to co-witness through the optic window at standard height. If the optic ever goes down, your irons are right there. The XRAY3 front sight uses a tritium/fiber optic insert for visibility in low light without any batteries required.
There are a wide variety of holsters made specifically for the P320 XCompact with an optic. Most major holster manufacturers, including Safariland, Blackpoint Tactical, and Tier 1 Concealed, offer options cut for the XCompact with a red dot. Just make sure you're ordering an optic-cut version, as standard P320 Compact holsters may not accommodate the height of the ROMEO-X Pro.
Yes, that modularity is one of the P320 platform's biggest advantages. The serialized fire control unit can be moved into different grip modules, which means you can swap to a full-size or XCarry grip module if you want more real estate in your hand. The XCompact grip specifically features the fastback carry cut and integrated magwell that set it apart from the standard compact module.
The ROMEO-X Pro uses a CR1632 battery that loads from the side of the optic housing, so you never have to remove the optic to swap a battery. Sig rates the runtime at up to 20,000 hours at medium brightness. The MOTAC motion-activation system automatically powers the optic down after brief inactivity and wakes it up the moment the gun moves, which helps extend that battery life considerably.
It's a popular daily carry choice, and the XCompact's reduced fastback grip cut and 3.6-inch slide keep the overall footprint manageable under a cover garment. The optic does add a small amount of height to the slide profile, but most people who carry this setup report that it doesn't make a meaningful difference compared to running it without an optic. The grip length is the main factor for printing, and the XCompact handles that well.
| UPC | 798681691722 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 320XC-9-BXR3-RXX |
| Action | |
| Barrel Length | 3.6'' |
| Caliber/Gauge | 9mm |
| Capacity | 15+1-Round |
| Color | Black |
| Length | 7'' |
| Magazine Included | 2 x 15-Round |
| Model | |
| Number of Magazines | 2 |
| Product Type | Striker Fired |
| Shipping Weight | 2.9 |
| Sights | Night Sights |
| Sights Type | Night Sights |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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