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Sig Sauer
The Sig Sauer Cal-X Kit P320-M17 9mm is a complete conversion system that transforms your manual-safety P320 into the civilian counterpart of the U.S. Army's adopted M17 platform. If you already own a P320 and want to build a modern, optics-ready full-size duty or training pistol in Coyote Tan, this kit gives you everything needed—slide, barrel, recoil assembly, grip module, and magazines—in one box. The M17 design earned the U.S. military's Modular Handgun System contract for its modular architecture and performance; this kit brings that same proven foundation to civilian shooters.
What sets this kit apart is its optic-ready capability. The slide is cut to accept the ROMEO-M17 red-dot sight on the SIG-LOC MHS footprint, letting you mount quality glass without gunsmithing. The full-size 4.7-inch PVD-coated stainless steel slide in Coyote Tan is paired with matching Coyote Tan grip, creating a cohesive, professional aesthetic. You get SIGLITE night sights front and rear (rear plate is removable), so you're combat-effective in low light out of the box, with or without an optic mounted.
The kit includes three 10-round aluminum magazines, a 4.7-inch barrel, and the recoil spring assembly—all you need to convert a compatible manual-safety P320 frame. The M1913 accessory rail lets you add lights, lasers, or other gear. Whether you're building a duty-grade pistol, setting up a multi-caliber training platform, or just want the versatility the P320 ecosystem offers, this Cal-X kit delivers military-proven design with civilian flexibility.
| Caliber | 9mm Luger |
| Barrel Length | 4.7 inches (119.38 mm) |
| Slide Material | Stainless Steel, PVD Coated |
| Slide Color | Coyote Tan |
| Grip Material | Polymer |
| Grip Color | Coyote Tan |
| Pistol Size | Full-Size |
| Safety | Manual Safety |
| Sights | SIGLITE Night Sights (front and rear plate) |
| Optic Ready | Yes—SIG-LOC MHS footprint |
| Accessory Rail | M1913 Picatinny |
| Threaded Barrel | No |
| Magazines Included | Three 10-round aluminum magazines |
| Magazine Capacity | 10 rounds per magazine |
This kit is designed for a P320 frame with a manual safety. Verify your frame's safety configuration before ordering to ensure compatibility.
The kit does not include a ROMEO-M17 red-dot sight. The slide is cut and ready to accept one, but you'll need to purchase the optic separately.
You get the complete conversion package: the full-size Coyote Tan slide and barrel assembly with recoil spring, the matching Coyote Tan grip module, three 10-round magazines, and SIGLITE night sights (front post and removable rear plate).
Yes. The M1913 Picatinny rail accommodates standard tactical lights, lasers, and other rail-mounted accessories.
Sig Sauer
The Sig Sauer Cal-X Kit P320-M17 9mm is a complete conversion system that transforms your manual-safety P320 into the civilian counterpart of the U.S. Army's adopted M17 platform. If you already own a P320 and want to build a modern, optics-ready full-size duty or training pistol in Coyote Tan, this kit gives you everything needed—slide, barrel, recoil assembly, grip module, and magazines—in one box. The M17 design earned the U.S. military's Modular Handgun System contract for its modular architecture and performance; this kit brings that same proven foundation to civilian shooters.
What sets this kit apart is its optic-ready capability. The slide is cut to accept the ROMEO-M17 red-dot sight on the SIG-LOC MHS footprint, letting you mount quality glass without gunsmithing. The full-size 4.7-inch PVD-coated stainless steel slide in Coyote Tan is paired with matching Coyote Tan grip, creating a cohesive, professional aesthetic. You get SIGLITE night sights front and rear (rear plate is removable), so you're combat-effective in low light out of the box, with or without an optic mounted.
The kit includes three 10-round aluminum magazines, a 4.7-inch barrel, and the recoil spring assembly—all you need to convert a compatible manual-safety P320 frame. The M1913 accessory rail lets you add lights, lasers, or other gear. Whether you're building a duty-grade pistol, setting up a multi-caliber training platform, or just want the versatility the P320 ecosystem offers, this Cal-X kit delivers military-proven design with civilian flexibility.
| Caliber | 9mm Luger |
| Barrel Length | 4.7 inches (119.38 mm) |
| Slide Material | Stainless Steel, PVD Coated |
| Slide Color | Coyote Tan |
| Grip Material | Polymer |
| Grip Color | Coyote Tan |
| Pistol Size | Full-Size |
| Safety | Manual Safety |
| Sights | SIGLITE Night Sights (front and rear plate) |
| Optic Ready | Yes—SIG-LOC MHS footprint |
| Accessory Rail | M1913 Picatinny |
| Threaded Barrel | No |
| Magazines Included | Three 10-round aluminum magazines |
| Magazine Capacity | 10 rounds per magazine |
This kit is designed for a P320 frame with a manual safety. Verify your frame's safety configuration before ordering to ensure compatibility.
The kit does not include a ROMEO-M17 red-dot sight. The slide is cut and ready to accept one, but you'll need to purchase the optic separately.
You get the complete conversion package: the full-size Coyote Tan slide and barrel assembly with recoil spring, the matching Coyote Tan grip module, three 10-round magazines, and SIGLITE night sights (front post and removable rear plate).
Yes. The M1913 Picatinny rail accommodates standard tactical lights, lasers, and other rail-mounted accessories.
