The Sig Sauer P320 X-Compact is a 9mm semi-automatic compact pistol with a 3.6-inch barrel and a 15-round magazine capacity. It has an optics-ready slide, an X Grip module, and black finish. Some configurations include a Romeo-RS Pro optic and X-Ray 3 iron sights, and come with two magazines. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P320 X-Compact 
• Caliber: 9mm 
• Action: Semi Auto 
• Barrel Length: 3.6 in 
• Capacity: 15+1 rounds 
• Color/Finish: Black 
   

Detailed Features 

• Optics-ready slide 
• X Grip modular grip module 
• Compatible with Romeo-RS Pro optic (included in certain configurations) 
• X-Ray 3 iron sights 
• Includes two 15-round magazines in select configurations

P320 X-Compact owners frequently point to the modular grip system as a standout feature. The X Grip frame gives a secure purchase for most hand sizes, and the optics-ready configuration is a practical baseline for those who want to add a red dot without additional milling.

At 3.6 inches, the barrel makes this a genuinely compact carry option, and owners who use it for concealed carry note the balance between capacity and footprint is well thought out. Recoil is manageable for a compact 9mm, and the 15-round capacity is a strong point versus competitors in this size class.

Trigger feel generates some debate. Many P320 owners are satisfied with the reset and pull weight, but it is a topic that comes up often enough to note. Those who add the Romeo-RS Pro tend to review the package favorably overall, while buyers who purchase the optic-ready-only model generally see aftermarket mounting as a straightforward next step.