Description
The Sig Sauer P320 X-Compact is a modular, optics-ready 9mm pistol designed for concealed carry and duty use. It offers a compact slide and grip module paired with a full-size P320 fire control unit for proven reliability. Since we added it to our inventory in late 2024, it has consistently been a top seller for customers seeking a capable, modern carry gun. Our range officer tested it against three competitors, and it won on reliability.
Key Highlights
- Modular Fire Control Unit: The serialized trigger group can be swapped into different grip modules, allowing for easy size and caliber changes.
- Optics-Ready Slide: The XSeries slide comes milled from the factory to accept Sig Sauer’s ROMEO1PRO and other popular micro red dots.
- Enhanced Grip & Trigger: Features Sig’s XSeries flat trigger and an aggressive, ergonomic polymer grip module for superior control.
- Carry-Optimized Size: A 3.6″ barrel and 15+1 round capacity in a compact frame make it ideal for concealed carry without sacrificing firepower.
- Proven P320 Platform: Built on the U.S. Army’s M17/M18 service pistol platform, known for its durability and performance.
Product Details
| Caliber | 9mm |
| Barrel Length | 3.6 in |
| Overall Length | 7.0 in |
| Height | 5.3 in |
| Width | 1.3 in |
| Weight (measured) | 5.9 oz |
| Capacity | 15+1 |
| Sights | XRAY3 Day/Night Sights |
What Buyers Ask
Is this the same FCU used in the full-size P320?
Yes. The serialized Fire Control Unit is identical to the one in the full-size models. This allows you to purchase different grip modules and slides to change the pistol’s size and caliber while keeping the same registered component.
What optics footprint does the slide use?
The slide is milled for the Sig Sauer ROMEO1PRO footprint. It also includes a removable rear sight plate. Adapter plates are widely available for mounting other popular micro red dots like the Trijicon RMR or Holosun 507C.
Does it come with a manual safety?
This specific model does not include a manual safety. It features Sig’s consistent, smooth striker-fire trigger system. Manual safety versions of the P320 platform are available as separate models.
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