The Sig Sauer P320 Compact is a striker-fired semi-automatic 9mm pistol with a 3.9-inch barrel, 10+1 capacity, and Black Nitron finish. Overall length is 7.20 inches and weight is 25.8 oz (1.6 lbs). The frame is polymer with black Nitron stainless steel slide. Sights are steel 3-dot contrast style. No manual safety. Includes two magazines. 
 

Key Specifications 

• Manufacturer: Sig Sauer 
• Model: P320 
• Type: Semi-Auto Handgun 
• Caliber: 9mm Luger 
• Barrel Length: 3.9 inches 
• Overall Length: 7.20 inches 
• Weight: 25.8 oz (1.6 lbs) 
• Capacity: 10+1 rounds 
• Frame Finish: Black Nitron 
• Slide Finish: Black Nitron Stainless Steel 
• Grips: Black Polymer 
• Sight Configuration: Steel 3-Dot with Contrast Style 
• Safety Features: No manual safety 
   

Detailed Features 

 
The P320 uses a modular serialized trigger group, so the frame size can be swapped without a transfer -- useful for shooters who want to reconfigure between compact and full-size. The striker-fired action has a consistent trigger pull. The 3-dot contrast sights are steel, not plastic. Black Nitron on the stainless slide holds up well against wear and corrosion. The grip texture is firm without being aggressive. 
 

Usage 

 
The P320 Compact at 7.20 inches overall and 25.8 oz is a mid-size carry or duty option. The 10+1 capacity is the California-compliant configuration; the platform supports higher-capacity magazines where legal. The modular serialized unit is a genuine advantage for shooters who want to run multiple configurations from one registration.

The Sig Sauer P320 Compact draws well-established positive feedback. The modular design is the most discussed feature -- owners value the ability to swap frames and slides on the serialized trigger unit, which no other pistol in the class does as cleanly. This comes up often as the primary reason buyers chose the P320 over comparable options.

Reliability and accuracy are consistent positives. The P320 has a track record across military and law enforcement use, which gives civilian buyers confidence in the platform. The striker-fired trigger is smooth and consistent, and most shooters find it easy to shoot accurately.

The 3-dot contrast sights are functional but often the first upgrade shooters make -- aftermarket night sights and optic cuts are well-supported.

The 25.8 oz weight is on the heavier side for a compact, which some carry-focused buyers note as a consideration. The 10-round capacity in this listing reflects California compliance; shooters elsewhere will typically run higher-capacity magazines.

Overall the P320 Compact is a well-regarded platform with a strong upgrade path and broad aftermarket support.