Sig Sauer P320 9mm Luger PVD Black Stainless Steel Optic Ready Slide with XRAY3 Suppressor Sights - Compatible with ROMEO1 PRO/ROMEO2

The Sig Sauer P320 9mm optic-ready slide is a factory replacement component built for shooters who want modern red-dot capability on a proven platform. This PRO-CUT slide assembly ships with XRAY3 suppressor-height day/night sights and arrives milled for optic mounting—compatible with ROMEO1 PRO, ROMEO2, Delta Point Pro, and RMR footprints (RMR requires a sealing plate). Whether you're upgrading a duty gun, building a competition rig, or setting up a concealed-carry backup with modern aiming, this slide gives you the option to run iron sights or add your preferred compact optic.

The slide is finished in PVD black on stainless steel, with stylized relief cuts that break up the profile and add a touch of character without sacrificing durability. The removable optics plate keeps mounting screws accessible from the top, making optic changes and adjustments straightforward. This is the slide component only—barrel and recoil spring assembly are not included, so you'll need to transfer existing parts or source compatible components separately.

Sig offers this slide in three different configurations to match your barrel choice: 3.6", 3.9", or 4.7" (non-threaded versions), as well as threaded variants at 4.3", 4.6", and 5.5" for shooters running suppressors or muzzle devices. Verify your barrel length before ordering to ensure proper fit. The slide is cut for 9mm only and will not work with .40 S&W, .357 SIG, or .45 ACP barrels.

Key Features

• Factory Sig Sauer PRO-CUT optic-ready slide assembly for P320 Sub-Compact and XCOMPACT platforms
• XRAY3 suppressor-height day/night sights for low-light and daylight shooting
• Milled for ROMEO1 PRO, ROMEO2, Delta Point Pro, and RMR red-dot sight mounting
• Removable optics plate with top-accessible mounting screws for easy optic swaps
• Stylized relief cuts on slide body
• PVD black finish on stainless steel for durability and corrosion resistance
• Available for 3.6", 3.9", or 4.7" barrels (both threaded and non-threaded lengths)

Specifications

Frequently Asked Questions

What barrels are compatible with this P320 slide?

This slide is built for 9mm barrels only. Sig offers three length options: 3.6", 3.9", or 4.7" in non-threaded configuration, as well as threaded versions at 4.3", 4.6", and 5.5". Verify your barrel length before ordering. The slide will not function with .40 S&W, .357 SIG, or .45 ACP barrels.

What red-dot sights work with this optic-ready slide?

The slide is milled for ROMEO1 PRO, ROMEO2, Delta Point Pro, and RMR footprints. If you're mounting an RMR, you'll need a sealing plate. The slide ships with XRAY3 suppressor-height iron sights, so you can run irons alone or add a red dot on top.

Does this slide come with a barrel and spring?

No, this is the slide component only. You'll need to source a compatible barrel and recoil spring assembly separately, or transfer them from an existing P320 frame.

Will this slide void my P320 warranty?

Sig states that this slide does not void your firearm warranty when used as a factory replacement component.