Sig Sauer126513371
Sig Sauer P320 Pro 9mm X-RAY3 ROMEO1PRO 3.9" Black Pistol$643.75
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Availability: In Stock
The Sig Sauer P320 Full-Size 9mm with ROMEO1PRO optic and X-RAY3 sights is a modern carry and duty pistol built for shooters who want red-dot speed without sacrificing backup iron sights. This is a slide assembly designed around Sig's low-profile ROMEO1PRO reflex sight—which sits low enough on the slide to co-witness with standard-height iron sights, eliminating the need for expensive suppressor-height sight setups. That means faster target acquisition in any light, with irons ready if you need them.
What sets this P320 apart is its Two Port Slide Integrated Expansion Chamber. Unlike traditional compensated slides, this system mitigates recoil and helps tame muzzle rise without the maintenance headaches or overly tall profile of ported designs. The result: quicker, more controlled follow-up shots. The nitron-finished stainless steel slide is durable and corrosion-resistant, and the front cocking serrations give you a sure grip for press checks and tactical reloads. Field stripping remains straightforward—no exotic disassembly required.
The included X-RAY3 day/night sights are proven Sig standard-height iron sights that co-witness perfectly with the ROMEO1PRO. The 2 MOA red dot is precise for precision work; the 32 MOA circle helps you stay on target in dynamic situations. Compatible with factory 3.9" barrels and full-size P320 recoil spring assemblies (sold separately), this slide transforms your P320 into a modern, optic-ready duty gun without the complexity.
| Caliber | 9mm Luger |
| Barrel Length | 3.9" |
| Slide Finish | Nitron |
| Slide Material | Stainless Steel |
| Color | Black |
| Primary Optic | ROMEO1PRO Reflex Sight |
| Red Dot Size | 2 MOA |
| Circle Reticle | 32 MOA |
| Iron Sights | X-RAY3 Day/Night |
| Optic Footprint | PRO (DeltaPoint Pro) |
| Integrated Compensator | Yes (Two Port) |
| Loaded Chamber Indicator | No |
| Optic Ready | Yes |
Yes, this slide is compatible with factory 3.9" barrels and full-size P320 recoil spring assemblies. These components are sold separately.
The X-RAY3 sights are standard height and sit in true co-witness with the ROMEO1PRO optic. You get both—iron sights remain visible alongside the red dot without bulky suppressor-height hardware.
The Two Port Slide Integrated Expansion Chamber is designed to mitigate recoil and help control muzzle rise while keeping the overall profile lower than traditional compensated slides. It also requires less maintenance than heavily ported designs.
No. Disassembly remains as straightforward as any standard P320—no special tools or unusual procedures.
SKU: 126514248
Availability: In Stock
The Sig Sauer P320 Full-Size 9mm with ROMEO1PRO optic and X-RAY3 sights is a modern carry and duty pistol built for shooters who want red-dot speed without sacrificing backup iron sights. This is a slide assembly designed around Sig's low-profile ROMEO1PRO reflex sight—which sits low enough on the slide to co-witness with standard-height iron sights, eliminating the need for expensive suppressor-height sight setups. That means faster target acquisition in any light, with irons ready if you need them.
What sets this P320 apart is its Two Port Slide Integrated Expansion Chamber. Unlike traditional compensated slides, this system mitigates recoil and helps tame muzzle rise without the maintenance headaches or overly tall profile of ported designs. The result: quicker, more controlled follow-up shots. The nitron-finished stainless steel slide is durable and corrosion-resistant, and the front cocking serrations give you a sure grip for press checks and tactical reloads. Field stripping remains straightforward—no exotic disassembly required.
The included X-RAY3 day/night sights are proven Sig standard-height iron sights that co-witness perfectly with the ROMEO1PRO. The 2 MOA red dot is precise for precision work; the 32 MOA circle helps you stay on target in dynamic situations. Compatible with factory 3.9" barrels and full-size P320 recoil spring assemblies (sold separately), this slide transforms your P320 into a modern, optic-ready duty gun without the complexity.
| Caliber | 9mm Luger |
| Barrel Length | 3.9" |
| Slide Finish | Nitron |
| Slide Material | Stainless Steel |
| Color | Black |
| Primary Optic | ROMEO1PRO Reflex Sight |
| Red Dot Size | 2 MOA |
| Circle Reticle | 32 MOA |
| Iron Sights | X-RAY3 Day/Night |
| Optic Footprint | PRO (DeltaPoint Pro) |
| Integrated Compensator | Yes (Two Port) |
| Loaded Chamber Indicator | No |
| Optic Ready | Yes |
Yes, this slide is compatible with factory 3.9" barrels and full-size P320 recoil spring assemblies. These components are sold separately.
The X-RAY3 sights are standard height and sit in true co-witness with the ROMEO1PRO optic. You get both—iron sights remain visible alongside the red dot without bulky suppressor-height hardware.
The Two Port Slide Integrated Expansion Chamber is designed to mitigate recoil and help control muzzle rise while keeping the overall profile lower than traditional compensated slides. It also requires less maintenance than heavily ported designs.
No. Disassembly remains as straightforward as any standard P320—no special tools or unusual procedures.
SKU: 126514248