SIG Sauer P365 Nitron MS 9mm Micro Compact with Manual Safety, X-RAY3 Sights, 3.1 in Barrel, 15+1
This SIG Sauer P365 Nitron MS stands out as a micro-compact 9mm with an ambidextrous manual safety, factory X-RAY3 day/night sights, and a durable Nitron-finished slide. It includes four factory magazines totaling a 15+1 configuration, a SIG Sauer hard case with matching label, and features the modular serialized FCU design. Rated for +P ammunition and built in the USA, it is a well-equipped, carry-ready P365 variant.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are light signs of wear and handling, with some surface scratches visible.
What’s Included
- SIG Sauer factory hard case (gray) with matching model/serial label
- 2x 15-round factory SIG Sauer steel magazines
- 3x 10-round factory SIG Sauer steel magazines
- Magazine details: mix of USA- and Italy-made bodies; combination of flush-fit and extended baseplates with a grip-sleeve extension
The P365 Nitron MS combines a micro footprint with practical carry features. The striker-fired system uses a standard curved trigger, and the ambidextrous manual thumb safety adds a positive, user-selectable layer alongside internal safeties. The serialized, modular FCU design supports SIG’s P365 family approach introduced in 2018.
Its carbon steel 3.1-inch barrel and Nitron-finished slide offer a proven carry-grade setup. The slide includes front and rear serrations for confident manipulation and is configured with no optics cut. A single-slot SIG proprietary accessory rail provides light or laser mounting that matches the P365’s compact profile.
Factory SIG X-RAY3 day/night 3-dot sights are installed, with a bright green front ring for fast indexing in varied light. The textured polymer grip module provides secure control while maintaining the P365’s micro size.
This example is rated for +P ammunition and is marked NEWINGTON, NH USA. The included magazines expand carry flexibility: two 12-round options, one 10-round option for compact concealment, and one 15-round magazine for increased capacity. The case label lists model code 365-9-BXR3-MS and matches the pistol’s serial information.