P320 Modern Classic Slide, 4.7” Bull Barrel


Custom Modern Classic P320 slide designed by Bruce Gray and the Grayguns team. This slide features a refined, classic look that complements the modern design of the SIG Sauer® P320. This is the custom 4.7-inch fitted bull barrel version created by our team. It is optimized for USPSA Carry Optics.

Includes custom slide, fitted 9mm bull barrel, Grayguns Guide Rod and Spring, and all internals. Options available will vary.

Looking for an optic or sights for your custom slide? Order your choice of optic or sight package and we'll professionally install the optic for free!
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Our custom Modern Classic P320 4.7-inch slide package focuses first on the weight and balance of the slide. We’ve introduced a traditional 1911 spin with utility-driven serrations in strategic areas. Available in a Black Diamond-Like Carbon (DLC) finish. Each custom slide features the iconic Grayguns logo.

As a classic gunsmith, Bruce didn’t want his slide to resemble or feel like a wood rasp out of a woodshop. They went through many iterations but settled on something traditional for this modern sporting pistol.

Package Includes

  • Custom Grayguns Modern Classic designed slide
  • Grayguns Guide Rod with Recoil Spring
  • Professionally fitted OEM 9mm bull barrel
  • OEM internals (Ejector, Striker Assembly, and Slide Cap)
  • Choice of optic cut or OEM dovetails only

Grayguns P320 Slide – 4.7-inch – Additional Information

The Grayguns team uses an original OEM 5″ bull barrel from the P320 XFive and cuts and fits each slide and barrel combination to ensure a tight and more consistent lock-up.

You can directly mount one of our red dot options to the slide. There is no need for an adaptor plate.

The FTP Alpha 3 will not fit our slides. Although the hole pattern is the same as a Romeo3 Max, the footprint of the FTP optic is too long.

Additional information

Weight N/A
Package Dimensions N/A
Slide Configuration

Cut for Romeo3 Max, Cut for Romeo1 Pro, Cut for Trijicon RMR

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Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.

Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.

Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.

Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.