The Sig Sauer P365X is a striker-fired semi-automatic pistol chambered in 9mm Luger with a 3.1-inch barrel. It ships with two 12-round magazines and includes the Romeo-X SIG-LOC compact optic pre-installed. The slide has a matte black finish with X-Ray 3 night sights co-witnessed to the optic. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P365X 
• Caliber: 9mm Luger 
• Action: Semi Auto 
• Capacity: 12+1 
• Barrel Length: 3.1 inches 
• Color/Finish: Black 
   

Detailed Features 

• Romeo-X SIG-LOC compact optic included and pre-installed 
• X-Ray 3 night sights for co-witness capability 
• Two 12-round magazines included 
• Matte black finish on slide and frame 
• Striker-fired action with optics-ready cut

The P365X with the Romeo-X optic is a popular configuration for those who want a ready-to-carry package without separately sourcing a red dot. Owners praise the Romeo-X's SIG-LOC mounting system for its low-profile fit, and the X-Ray 3 night sights get consistent positive marks.

The 3.1-inch barrel and slim frame make the P365X comfortable for concealed carry, which is the most common use case owners describe. A recurring complaint is that the grip length limits finger purchase for shooters with larger hands, making the two 12-round magazines feel adequate but not generous.

Trigger feel on the P365X splits opinions. Experienced Sig users consider it acceptable, while those coming from other compact pistols occasionally find the reset less distinct than they prefer. Overall, the bundled optic value is the deciding factor for most buyers.