The Sig Sauer P365-380 is a compact striker-fired pistol chambered in .380 ACP, with the ROMEOZero Elite reflex sight pre-installed. The slide is optic-ready and comes with XRAY3 day/night sights as backup irons. Barrel length is 3.1 inches, overall length 5.8 inches, width 1 inch, height 4.2 inches. Capacity is 10+1 rounds. Weight is 15.7 oz. Manufacturer part number 365-380-BSS-RXZE. 
 

Key Specifications 

• Model: P365 
• Caliber: .380 ACP 
• Barrel Length: 3.1 inches 
• Overall Length: 5.8 inches 
• Width: 1 inch 
• Height: 4.2 inches 
• Capacity: 10+1 rounds 
• Weight: 15.7 oz (approx. 1 lb) 
• Finish: Black Nitride (Slide) & Black Polymer (Frame) 
• Manufacturer Part Number: 365-380-BSS-RXZE 
   

Features 

The included ROMEOZero Elite reflex sight adds red dot capability out of the box. The XRAY3 day/night front sight works independently when no optic is mounted. The carbon steel barrel sits in a stainless steel slide with black nitride finish; the frame is black polymer. The accessory rail accepts a light or laser. The double-stack 10-round magazine is solid capacity for a pistol measuring 1 inch wide. The serrated slide provides grip during manipulation in varied conditions. 
 

Usage 

Designed for concealed carry. At 15.7 oz and 5.8 inches overall it is easy to carry all day, and the 1-inch width minimizes printing. The .380 ACP chambering reduces recoil relative to 9mm in the same platform, at a tradeoff in terminal performance. Having the ROMEOZero Elite installed at the factory saves the cost and hassle of sourcing a compatible optic separately.

The P365-380 with ROMEOZero reflex sight gets positive marks from concealed carriers, particularly those who find 9mm recoil uncomfortable. The compact size and 1-inch width are frequently cited as genuine advantages for daily carry. The grip texture works for most users and holds well.

The included ROMEOZero sight is appreciated as a ready-to-go solution; accuracy with the optic mounted is described as notably better for fast target acquisition. Reliability is generally solid with quality factory .380 ACP loads.

On the critical side: magazine capacity (10 rounds) is viewed as limited compared to 9mm options of similar size. Price is described as high by some, particularly when factoring in .380 ACP ammunition costs. A few users find the trigger heavier than expected. Optic co-witnessing with the XRAY3 irons is noted as sometimes requiring adjustment.

The .380 ACP ammunition availability and cost draw mention -- in areas with limited supply, running this gun for regular practice can be inconvenient.