The Sig Sauer P320 ROMEO-X Pro Slide (brand part number 8901568) is a factory RXP X-Series stainless steel slide assembly in 9mm Luger with a black finish, sized for the 3.9-inch Carry-length P320 platform. Built by Sig Sauer, the slide comes with the ROMEO-X Pro reflex optic already installed low enough to co-witness with the included standard-height iron sights, so shooters can enjoy a consistent sight picture with or without the optic powered on. This assembly fits Compact and Carry size grip modules across both X-Series and non-X-Series frames, and it is built to accommodate a 3.9-inch barrel, which is sold separately.

Key Specifications

• Built for the Sig Sauer P320 pistol platform as an RXP X-Series slide assembly.
• Chambered in 9mm Luger, the P320’s most common caliber.
• Finished in black for a clean, low-glare look.
• Constructed from stainless steel for long-term durability.
• Cut with serrations for a secure grip during racking.
• Comes with a factory ROMEO-X Pro optic already installed.
• Uses Xray3 sights for a standard-height co-witness with the optic.
• Fits Compact and Carry size grip modules (X-Series and non-X-Series).
• Accommodates a 3.9-inch barrel, sold separately.

Frequently Asked Questions

Will this fit a Full-size P320 grip module? No, this slide is sized for Compact and Carry grip modules only.

Is the 3.9-inch barrel included? No, the barrel this slide is built to accommodate is sold separately.

Buy the Sig Sauer P320 ROMEO-X Pro 3.9-inch Slide

Bring factory optic-ready performance to your Carry-length P320. Order this handgun slide from our Lubbock, Texas gun shop for fast, insured shipping.