The Sig Sauer M18 9mm 3.9" Black 17/21rd Off Duty pistol brings the proven M18 platform to qualified professionals and serious shooters who want a compact duty-ready sidearm. Built around a striker-fired system with an optic-ready slide and SIGLITE night sights, this Off Duty variant balances a 3.9-inch barrel with generous 21+1 capacity for confident performance on demand.
This model’s textured black polymer grip frame, manual safety, and threaded barrel make it adaptable for everyday carry, training, and range use while remaining manageable in size at an overall length of 7.2 inches. Whether set up with a suppressor or a slide-mounted red dot, the Off Duty M18 offers a modern, controllable shooting experience backed by Sig Sauer’s reputation for dependable design and consistent innovation.
- Manufacturer: Sig Sauer
- Model: M18 Off Duty
- Caliber: 9mm
- Action: Striker Fired
- Barrel Length: 3.9 inches
- Number of Magazines: 3 (2 x 21-round, 1 x 17-round)
- Capacity: 21+1
- Optic Footprint: Optic-ready slide
- Unique Features: Threaded barrel, manual safety, textured polymer grip
- Night Sights: Siglite night sights
- External Safety: Manual safety
- Threaded Barrel: Yes
- What's In The Box: Pistol and three magazines
- Weight: 30.8 ounces
- Length: 7.2 inches
| __Barrel Length | 3.90" |
| __Capacity | 21 |
| __Optic Footprint | NA |
| __Model | M18 |
| __Caliber | 9mm |
| __Action | Striker Fired |
| __Kit Mags | 1848 |
