The Sig Sauer P365X is a micro-compact striker-fired pistol chambered in 9mm Luger with a 3.1-inch barrel and a 10+1 capacity. It ships with the ROMEO-RS compact optic installed and XRAY3 night sights, and has a Nitron finish on a black polymer frame with an accessory rail. The slide is optic-ready with a Shield RMSc footprint. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P365X 
• Caliber: 9mm Luger 
• Action: Striker-Fired 
• Capacity: 10+1 
• Barrel Length: 3.1 in 
• Color/Finish: Black Nitron 
   

Detailed Features 

• ROMEO-RS compact optic included, mounted at the factory 
• XRAY3 night sights co-witnessed with the optic 
• Micro-compact polymer frame with accessory rail 
• Shield RMSc footprint on the optic-ready slide 
• Ships with 2 magazines

Owners of the P365X with the ROMEO-RS optic consistently point to the factory-mounted red dot as the main draw. Getting a zeroed optic straight out of the box removes the fitting guesswork, and most find the XRAY3 backup sights genuinely usable if the dot ever goes down.

The micro-compact frame divides opinion when it comes to sustained shooting. Smaller hands tend to rate it highly for carry comfort, while shooters with larger hands find the grip a touch short for controlled rapid fire. The 10-round flush magazine is the trade-off for the slim profile.

On value, the P365X ROMEO-RS bundle is seen as a fair deal compared to buying the optic separately. The Nitron finish holds up well to holster wear in most accounts, though a few owners note the optic housing shows contact marks faster than the slide itself.