The Sig Sauer P320 slide assembly (brand part no. 8900957) is a factory replacement slide built for the Sub-Compact and X-Compact size P320 pistols, fitting the standard 9mm 3.6-inch non-threaded or 4.3-inch threaded barrels. Machined from stainless steel and finished in a durable DLC matte black coating, it comes cut for XRAY3 day/night suppressor-height sights so a proper sight picture is maintained even when running a suppressor. A removable flush-fit optics plate with top-accessible screws makes mounting a red dot straightforward, and the slide is cut to accept ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR footprint optics, the last requiring a sealing plate. This slide fits Sub-Compact, X-Compact, and Compact grip modules, giving P320 owners a genuine factory option for a slide swap or repair.

Key Specifications

• Built for P320 Sub-Compact and X-Compact size pistols.
• Fits standard 9mm 3.6-inch non-threaded or 4.3-inch threaded barrels.
• Finished with a durable DLC matte black coating.
• Cut for XRAY3 day/night suppressor-height sights.
• Compatible with ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR footprint optics.
• Includes a removable flush-fit optics plate with top-accessible screws.
• Compatible with Sub-Compact, X-Compact, and Compact grip modules.
• Features front and rear serrations for confident slide manipulation.
• Machined from stainless steel for long-term durability and corrosion resistance.

Frequently Asked Questions

What barrels does this slide fit? Standard 9mm 3.6-inch non-threaded or 4.3-inch threaded barrels.

Is this slide optic ready? Yes, it accepts ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR footprint optics.

What sights does it come with? XRAY3 day/night suppressor-height sights.

Buy the Sig Sauer P320 Sub-Compact Slide Assembly

Order this factory Sig Sauer slide from our Lubbock, Texas gun shop, and it will ship as soon as it is ready to send. Browse more handgun parts for your P320.