The Sig Sauer P320 ROMEO-X Pro Slide (brand part number 8901566) is a factory RXP X-Series stainless steel slide assembly in 9mm Luger with a black finish and front-and-rear serrations, sized for the compact 3.6-inch P320 platform. Built by Sig Sauer, this slide comes with the ROMEO-X Pro reflex optic already installed low enough to still use the included standard-height iron sights when the optic is powered down, giving a consistent, familiar sight picture either way. The assembly fits Compact size grip modules across both X-Series and non-X-Series frames and is built to accommodate a 3.6-inch barrel, 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 front and rear serrations for a secure grip from any angle.
• Comes with a factory ROMEO-X Pro optic already installed.
• Uses Xray3 sights for a standard-height co-witness with the optic.
• Fits Compact size grip modules (X-Series and non-X-Series).
• Accommodates a 3.6-inch barrel, sold separately.

Frequently Asked Questions

Does this have front slide serrations? Yes, it is cut with both front and rear serrations for a secure grip when racking or checking the chamber.

What barrel length does this slide need? It is built to accommodate a 3.6-inch barrel, which is sold separately.

Buy the Sig Sauer P320 ROMEO-X Pro 3.6-inch Slide

Get a compact, optic-ready slide with full front-and-rear grip texture. Order this handgun slide from our Lubbock, Texas gun shop for fast, insured shipping.