Sig Sauer P365-380 RBT-MS | .380 ACP | 3.1 in | Rainbow Slide

The Sig Sauer P365-380 Rainbow is a micro-compact, striker-fired pistol chambered in .380 ACP with a 3.1-inch barrel and an optic-ready slide compatible with RomeZero/RMS-C footprints. It ships with XRAY3 day/night sights, a manual thumb safety, and two 10-round magazines, making it suitable for everyday carry and concealed carry applications. For a compatible reflex sight under $1,000, consider the SIG RomeoZero or a Shield RMSc-format micro red dot; both pair directly with the P365-380 Rainbow’s removable sight plate and RMS-C footprint.

Product Specifications

• The UPC is 798681671618.
• The caliber is .380 ACP.
• The barrel measures 3.1 inches.
• The firearm is optic-ready with an RMS-C / RomeZero-compatible footprint.
• The slide finish is Rainbow Titanium.
• The frame material is Polymer with a black frame color.
• The pistol ships with 2 magazines, each with a 10-round capacity.
• The sights are XRAY3 Day/Night (Siglite night sights).
• The action is Semi-Auto (striker-fired).
• The firearm includes a manual thumb safety.
• The overall length is 5.8 inches.
• The unloaded weight is 15.7 oz.
• The slide material is Stainless Steel.

The P365-380 Rainbow combines a compact footprint with optics-ready versatility and a distinct Rainbow Titanium slide finish. Its modular polymer grip module and included extended magazine provide options for concealment or improved shootability at the range. The XRAY3 sights and removable sight plate make quick installation of a compatible micro red dot straightforward, while the manual thumb safety gives an additional user-controlled engagement option.

Owners commonly praise the P365-380 for its soft-shooting characteristics and for having a clean, crisp trigger pull combined with easy concealability.

Related Videos: