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This is a complete slide assembly from Sig Sauer designed for the P320 platform in 9mm. It arrives with the ROMEO-X Pro reflex sight already mounted and ready to use. The key feature here is how low the optic sits relative to the slide, which lets you keep using standard-height iron sights for co-witness. You won't need those bulky suppressor-height sights that used to be required when mounting a reflex optic.
The slide features a two-port integrated expansion chamber built into the design. This chamber helps manage muzzle flip and felt recoil without requiring the maintenance headaches that come with traditional compensated slides. It works by directing some of the muzzle blast upward and backward, effectively mitigating recoil so your follow-up shots come faster and easier. The field stripping process remains identical to a standard P320, so there's zero learning curve with maintenance.
The ROMEO-X Pro is SIG Sauer's military-inspired reflex sight now available for civilians. It features aspherical glass lenses that eliminate distortion across your entire field of view, making target acquisition intuitive and natural. The optic includes a 3 MOA dot with adjustable brightness across multiple settings, including dedicated night vision modes. Battery life runs around 20,000 hours, and the side-mounted battery compartment lets you swap cells without losing your zero.
The slide is machined from stainless steel and finished in a durable black Nitron coating. Front and rear serrations give you solid purchase points when cycling the action or performing immediate action drills. At 3.9 inches, this is sized for the P320 Carry and Compact frames, and it will work with both X-Series and standard grip modules. The slide length is 4.7 inches total but accommodates a standard 3.9-inch barrel. This assembly is stripped down to just the slide itself without a barrel or recoil spring, so you'll need to source those separately if you're building from scratch.
No. The ROMEO-X Pro optic is mounted incredibly low to the slide, allowing you to use standard-height iron sights for co-witness. This eliminates the need for expensive suppressor-height sights that were required with older optic setups. You get a consistent sight picture without modifications to the iron sight height.
The optic comes factory-mounted to the slide and ready to use, though you should verify zero at the range before relying on it for any purpose. Sig Sauer handles the initial installation at the factory to ensure proper fitment and initial alignment.
This slide works with P320 Full-Size, Carry, and Compact grip modules in both X-Series and standard configurations. The 3.9-inch barrel length designation matches Carry and Compact-sized frames. If you're running a Sub-Compact or X-Compact frame, you'll need the shorter slide assembly designed for those platforms.
The two-port expansion chamber is built into the slide itself, so there's nothing to add to your barrel. It directs muzzle gases to reduce felt recoil and muzzle flip without the maintenance and fouling issues of traditional compensators. Field stripping remains exactly like a standard P320.
| UPC | 798681688739 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 8901534 |
| Model | |
| Sights | Xray3 |
| Style | Front & Rear Serrations |
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