SIG SAUER P320-M18 9mm Pistol Black with Manual Safety

SIG SAUER P320-M18 9mm Pistol in Black

The SIG SAUER P320-M18 9mm brings the compact proportions and control layout of the M18 service-pistol platform to a distinctive all-black commercial configuration. This exact model pairs a 3.9-inch barrel with a striker-fired action, a frame-mounted manual safety, factory night sights, and a generous three-magazine package. It is a practical choice for shooters who want a duty-oriented P320 with familiar M18 ergonomics but prefer a black finish rather than the traditional coyote color.

Its compact-length slide and full-capacity grip create a useful balance between handling and shootability. The 3.9-inch barrel keeps the front of the pistol manageable for storage, transport, and holster use, while the longer grip provides a secure firing-hand purchase. The included magazine set consists of one 17-round magazine and two extended 21-round magazines, giving the owner both a flush-fitting option and additional-capacity magazines for the range, training, or defensive readiness.

M18-Pattern Controls and P320 Modularity

This pistol uses the P320 family’s striker-fired operating system and modular architecture. The removable fire-control assembly is the serialized component at the center of the P320 design, allowing compatible grip modules and other components to be changed without replacing the core fire-control unit. That modularity has made the P320 platform attractive to shooters who want a pistol that can be adapted as needs, hand size, or intended use change.

An ambidextrous manual safety is part of this M18 configuration. Its levers are positioned for access from either side of the frame, supporting right- and left-handed operation. The slide stop and magazine release follow the familiar P320 layout, while the grip shape and texturing are designed to provide positive control without requiring overly aggressive surface treatment.

Optic-Ready Slide and Night Sights

The P320-M18 platform is configured for modern sighting options. Its slide incorporates a removable optic cover plate, allowing the pistol to accept compatible reflex optics when the correct mounting interface and hardware are used. Buyers should always confirm optic footprint and screw compatibility before installation, because plate and fastener requirements can vary among optic models.

Factory night sights provide a durable iron-sight solution for bright or reduced-light conditions. They remain useful as the pistol’s primary sights and as a familiar reference for shooters who later add an optic. Front and rear slide serrations provide multiple grasping surfaces for loading, unloading, and routine chamber checks.

Included Magazine Package

• One 17-round magazine for a streamlined, flush-fitting setup.
• Two 21-round magazines for extended capacity during training or range sessions.
• 9mm chambering with broad ammunition availability for practice and defensive use.
• 3.9-inch barrel for the compact M18 slide format.
• Black finish across the slide and grip module.
• Manual safety and night sights for an M18-style control and sighting package.

Who This Pistol Is For

This black P320-M18 is well suited to owners who want a service-inspired handgun for range work, training, home-defense planning, or general collection use. The combination of a compact slide, full-capacity grip, ambidextrous safety, and three factory magazines provides a ready-to-use package without requiring immediate accessory purchases. Its P320 compatibility also leaves room for future customization within the limits of compatible components and applicable law.

As with any firearm, verify magazine-capacity restrictions and transfer requirements for your jurisdiction before ordering. Use only quality 9mm ammunition that meets the manufacturer’s recommendations, inspect the pistol and magazines before use, and follow the current SIG SAUER P320 operator’s manual for loading, unloading, cleaning, lubrication, and safe handling.

Exact Model Identification

• Manufacturer part number: SIG WM18-9-MS-BLK
• UPC: 798681726509
• Model family: P320-M18
• Caliber: 9mm
• Barrel length: 3.9 inches
• Finish: Black
• Magazine package: One 17-round and two 21-round magazines