Sig Sauer120919955
Sig Sauer P320 AXG Legion 9mm 3.9" Barrel 10-Round Gray$1,329.99
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer P320 M18 9mm is the California-compliant version of the pistol that's trusted by every branch of the U.S. Military and serves as the official sidearm of the Marine Corps. If you're a California resident who wants proven military-grade reliability in a carry-sized package, this is the real deal—same engineering that's been tested in the field, now available to you in a configuration that meets state requirements.
Built on the modular P320 platform, the M18 delivers the accuracy and durability the military demands in a compact 3.9-inch barrel design that works hard in a carry holster. The slide comes optic-ready and finished in coyote tan to match the grip module, giving it that purposeful, no-nonsense aesthetic. You get three 10-round steel magazines, SIGLITE night sights, and a removable night sight rear plate—everything you need to run it right out of the box. At 28.1 ounces with a 5.8-inch sight radius, it's balanced for shootability without excess bulk.
The P320 platform's modular design means your FCU (fire control unit) and grip module are separate, and the slide is compatible with Sig's ROMEO-X, ROMEO1 PRO, and ROMEO2 red dot optics if you want to upgrade down the road. The M1913 rail lets you mount a light or laser. Whether you're training, carrying, or heading to the range, this is a platform that scales to your needs and won't let you down.
| Caliber | 9mm Luger |
| Barrel Length | 3.9 inches |
| Overall Length | 7.2 inches |
| Height | 5.5 inches |
| Width | 1.6 inches |
| Weight | 28.1 ounces |
| Sight Radius | 5.8 inches |
| Magazines Included | Three 10-round steel magazines |
| Sights | SIGLITE night sights with removable rear plate |
| Slide Finish | Coyote PVD |
| Slide Material | Stainless steel |
| Barrel Material | Carbon steel |
| Grip Module | Carry polymer, medium, coyote tan |
| Trigger | Striker-fired, standard curved |
| Safety | Manual safety |
| Accessory Rail | M1913 picatinny |
| Optic Ready | Yes—compatible with ROMEO-X, ROMEO1 PRO, ROMEO2 |
| State Compliance | California compliant |
Yes. This model is specifically designed to meet California's requirements and is sold as California-compliant.
Absolutely. The slide is optic-ready and directly compatible with Sig's ROMEO-X, ROMEO1 PRO, and ROMEO2 red dot optics.
The pistol comes with three 10-round steel magazines, SIGLITE night sights, and a removable night sight rear plate.
The M18 is the compact military version with a 3.9-inch barrel and modified ergonomics. This California-compliant variant meets state regulations on magazine capacity and features.
SKU: 120911816 • Width: 10in • Height: 3in • Depth: 13.2in • Weight: 3.55oz
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer P320 M18 9mm is the California-compliant version of the pistol that's trusted by every branch of the U.S. Military and serves as the official sidearm of the Marine Corps. If you're a California resident who wants proven military-grade reliability in a carry-sized package, this is the real deal—same engineering that's been tested in the field, now available to you in a configuration that meets state requirements.
Built on the modular P320 platform, the M18 delivers the accuracy and durability the military demands in a compact 3.9-inch barrel design that works hard in a carry holster. The slide comes optic-ready and finished in coyote tan to match the grip module, giving it that purposeful, no-nonsense aesthetic. You get three 10-round steel magazines, SIGLITE night sights, and a removable night sight rear plate—everything you need to run it right out of the box. At 28.1 ounces with a 5.8-inch sight radius, it's balanced for shootability without excess bulk.
The P320 platform's modular design means your FCU (fire control unit) and grip module are separate, and the slide is compatible with Sig's ROMEO-X, ROMEO1 PRO, and ROMEO2 red dot optics if you want to upgrade down the road. The M1913 rail lets you mount a light or laser. Whether you're training, carrying, or heading to the range, this is a platform that scales to your needs and won't let you down.
| Caliber | 9mm Luger |
| Barrel Length | 3.9 inches |
| Overall Length | 7.2 inches |
| Height | 5.5 inches |
| Width | 1.6 inches |
| Weight | 28.1 ounces |
| Sight Radius | 5.8 inches |
| Magazines Included | Three 10-round steel magazines |
| Sights | SIGLITE night sights with removable rear plate |
| Slide Finish | Coyote PVD |
| Slide Material | Stainless steel |
| Barrel Material | Carbon steel |
| Grip Module | Carry polymer, medium, coyote tan |
| Trigger | Striker-fired, standard curved |
| Safety | Manual safety |
| Accessory Rail | M1913 picatinny |
| Optic Ready | Yes—compatible with ROMEO-X, ROMEO1 PRO, ROMEO2 |
| State Compliance | California compliant |
Yes. This model is specifically designed to meet California's requirements and is sold as California-compliant.
Absolutely. The slide is optic-ready and directly compatible with Sig's ROMEO-X, ROMEO1 PRO, and ROMEO2 red dot optics.
The pistol comes with three 10-round steel magazines, SIGLITE night sights, and a removable night sight rear plate.
The M18 is the compact military version with a 3.9-inch barrel and modified ergonomics. This California-compliant variant meets state regulations on magazine capacity and features.
SKU: 120911816 • Width: 10in • Height: 3in • Depth: 13.2in • Weight: 3.55oz