The Sig Sauer P365 is a striker-fired (DAO) compact pistol chambered in .380 ACP with a 10+1 capacity. The Black Nitron finish and tritium night sights make this a carry-ready configuration out of the box, and the RMSC optic mount allows a red-dot to be added without additional machining. 
 

Key Specifications 

• Manufacturer: Sig Sauer 
• Model: P365 
• Caliber: .380 ACP 
• Action Type: Striker-fired (DAO) 
• Capacity: 10+1 rounds 
• Barrel Length: 3.1 inches 
• Overall Length: 5.8 inches 
• Weight: 2.5 lbs (15.7 oz) 
• Finish Color: Black Nitron 
• Sights: Tritium night sights for low-light visibility 
• Optic Mount Compatibility: RMSC 
   

Detailed Features 

The 5.8-inch overall length and 3.1-inch barrel keep the P365 compact enough to disappear under light clothing. Tritium night sights are installed from the factory, so there is no additional sight purchase needed for low-light use. The RMSC optic cut gives the option to run a miniature red dot co-witnessed with the night sights. The black polymer grip has a textured surface for a secure hold during firing. At 15.7 oz, the gun is comfortable for extended carry without fatigue. The manual safety is accessible but stays out of the way during a standard draw stroke.

Users discussing the P365 in .380 ACP with night sights generally like what they get, though the conversation has some consistent friction points.

The compact size and light weight come up most often as reasons to buy. The ergonomic grip fits a range of hand sizes and night sights draw repeated praise for building confidence in low-light defensive scenarios. The capacity is seen as a major plus relative to other guns in this class, and reliability across ammunition types is reported as consistently solid.

On the critical side, recoil in the .380 ACP from a lightweight compact can be snappier than shooters expect, particularly those coming from heavier platforms. Trigger feel is mixed. Some find it adequate, others want a lighter or smoother pull. The price is a sticking point for a few buyers who find comparable options at lower cost. Aftermarket holster and accessory options are thinner than for the most popular 9mm platforms.