The SIG Sauer P320 Compact is a semi-automatic pistol built around a modular design that lets users swap grip sizes and configurations to fit different hands and shooting styles. It works well for personal defense, competitive shooting, and range use. 
 

Key Specifications 

• Manufacturer: SIG SAUER 
• Model: P320 Compact 
• Caliber: 9mm Luger 
• Action: Striker Fired 
• Capacity: 15 + 1 rounds 
• Barrel Length: 3.9 inches 
• Overall Length: 7.2 inches 
• Weight: 26 oz. 
• Sights: Siglite Night Sights (Front & Rear) 
• Frame Material: Polymer Frame (Black) 
• Finish Type: Nitron Black 
• Trigger Type: Curved 
   

Detailed Features 

The striker-fired mechanism gives a consistent trigger pull, which helps with repeatable accuracy. The polymer frame keeps weight down without sacrificing durability. Siglite night sights let you acquire a target quickly in low-light conditions. The optics-ready slide accepts common red dot footprints, and the interchangeable grip system covers multiple hand sizes so shooters can dial in their fit. 
 
At 3.9 inches of barrel and 7.2 inches overall, the Compact sits between SIG's subcompact and full-size P320 variants, giving a 15+1 round capacity in a package that carries reasonably well.

Owners of the P320C 9mm Night Sight Compact generally rate it positively, with a few consistent themes across reviews.

The modular design gets the most praise. Being able to change grip sizes and, in some configurations, swap calibers makes it practical for shooters with different hand sizes or changing use cases.

Ergonomics come up constantly. Most users report a natural hand fit and no significant discomfort during extended range sessions.

Accuracy with the night sights is a recurring highlight. Shooters report tight groups across typical defensive distances, which builds confidence in the gun as a carry piece.

Reliability receives strong marks. Malfunctions are rarely mentioned, which matters to people selecting it for defensive use.

The night sights specifically draw praise from anyone who trains in low-light environments. The sights work as advertised for fast target acquisition in dim conditions.

On concealment: as a compact-frame pistol it prints more than a subcompact, but most owners report managing it effectively. The tradeoff is a 15-round magazine versus what slimmer guns offer.

Price discussions show mixed opinions. Many feel the quality justifies the cost; others compare it to less expensive options in the same caliber. That's a personal call depending on priorities.