The Sig Sauer P320 M18 is the commercial M18 variant chambered in 9mm and configured with a 3.9-inch barrel and coyote tan grip module. It features an optic-ready slide with a removable night-sight rear plate and ships with SIGLITE night sights. This carry-sized configuration includes one 17‑round magazine and two 21‑round magazines as provided in the manufacturer data. The design suits duty, everyday carry, and range use where optic compatibility and higher capacity are priorities.
Key Specifications
- The caliber is 9mm Luger.
- The barrel measures 3.9 inches.
- The overall length is 7.2 inches.
- The unloaded weight is 28.1 oz.
- The maximum capacity is 21+1 rounds.
- The package includes (1) 17‑round and (2) 21‑round magazines.
- The sighting system is SIGLITE front and removable night-sight rear plate.
- The action is striker-fired with a standard curved trigger.
- The slide finish is Coyote PVD.
- The frame includes an M1913 Picatinny accessory rail for lights and lasers.
Finished in coyote tones and built with an optic-ready slide and night-sight capability, the P320 M18 provides a practical balance of carry ergonomics, capacity, and accessory compatibility. Its combination of capacity, SIGLITE sighting, and an optic-capable slide make it well suited for duty, EDC, and range tasks where reliable performance and modularity matter.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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