Sig Sauer P320 X-Series 9mm Slide Assembly, 4.7" Barrel, X-Ray 3 Suppressor Sights, R2 Optic Ready

The Sig Sauer P320 X-Series 9mm slide assembly with 4.7" barrel delivers a factory-engineered upgrade path for shooters ready to build or refresh their carry or competition pistol. This optic-ready slide comes dressed with X-Ray 3 suppressor-height sights and a PRO-cut footprint that accepts modern red dots, making it a solid foundation for a modern duty or sport gun without the price of a complete handgun.

Built from stainless steel with a durable DLC matte finish, the slide pairs the ruggedness you'd expect from Sig with the refinement their X-Series platform is known for. The removable flush-fit optics plate means you can mount your choice of compatible optic and swap it out cleanly—top-accessible screws keep installation straightforward. X-Ray 3 day/night sights give you a reliable backup sight picture whether you're running a red dot or going iron-only. This is the slide only; barrel and recoil assembly are separate, so you're building a purpose-built setup rather than buying redundant parts.

This 9mm slide works with sub-compact, X-Compact, and compact grip modules, giving you flexibility in final ergonomics and concealability. It's compatible with standard 9mm barrels—choose a 4.7" non-threaded or 5.5" threaded barrel to match your intended use, whether that's concealed carry, range duty, or a suppressed setup. If you're swapping slides to breathe new life into an existing P320 or building a backup gun, this assembly gets you most of the way there without the commitment of a full pistol purchase.

Key Features

• Optic-ready PRO-cut footprint: compatible with ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR (with sealing plate)
• X-Ray 3 suppressor-height sights for day/night shooting
• DLC matte finish on stainless steel for durability and corrosion resistance
• Removable flush-fit optics plate with top-accessible mounting screws
• Works with sub-compact, X-Compact, and compact grip modules
• 9mm Luger only—not compatible with .40, .357, or .45

Specifications

Frequently Asked Questions

What optics are compatible with this slide?

The PRO-cut footprint accommodates ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR (with sealing plate). The slide ships with a removable flush-fit optics plate, so mounting and removal is straightforward.

What grip modules work with this P320 X-Series slide?

This slide is compatible with Sig Sauer sub-compact, X-Compact, and compact grip modules. You'll choose your grip based on your carry or use preference, then pair it with your barrel of choice.

Is this a complete slide assembly or do I need a barrel?

This is the slide only. You'll need to source a compatible 9mm barrel (4.7" non-threaded or 5.5" threaded for this specification) and recoil assembly separately to complete your P320.

Can I use this slide with .40 S&W or other calibers?

No. This slide is 9mm Luger only and is not compatible with .40, .357, or .45 caliber barrels or ammunition.