The Sig Sauer P320 SXG Reserve is a full-size semi-automatic handgun chambered in 9mm Luger with a 3.9-inch black barrel and 10+1 capacity. The slide is high polish DLC stainless steel with an integrated compensator and optic-ready cut on a Sig PRO footprint. The frame has a beavertail, Picatinny rail, GridLOK grip module, and serrated front and rear surfaces. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P320 SXG Reserve 
• Caliber: 9mm Luger 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 3.9 inches 
• Color/Finish: High Polish DLC Stainless Steel 
   

Detailed Features 

• Integrated compensator built into the slide 
• Optic-ready cut with Sig PRO footprint 
• GridLOK grip module on full-size frame 
• Serrated slide and beavertail frame with Picatinny rail

Owners of the P320 SXG Reserve are drawn to the high-polish DLC slide as a distinctive aesthetic, and most find the integrated compensator genuinely reduces muzzle flip in 9mm. The GridLOK grip module system gets consistent praise for allowing grip customization without tools, which is one of the P320 platform's long-standing strengths. The Sig PRO optic footprint is seen as a practical choice for direct-mount red dot options.

At the range, the SXG Reserve handles well for a full-size pistol with a 3.9-inch barrel. The integrated comp is effective, though some purists prefer a clean slide without it. Trigger feel on the P320 platform continues to split opinion: most find it acceptable for carry and competition, while a vocal minority swap it immediately.

The SXG Reserve sits at a premium price point within the P320 family. Buyers who want the high-polish finish and factory comp find the value reasonable given the included features. Those who would not use the comp or optic cut sometimes question paying the premium over a standard P320 variant.