GGP320 Slides

13 reviews Write a Review

Due to the change in laws we are no longer able to ship to WA

The adoption of the P320® platform by the U.S. Military, as well as many Law Enforcement agencies, professional lead farmers, competition shooters, and firearm instructors led to the development of a new line of GGP aftermarket slides. After all, the P320’s ability to be custom tailored to the individual user’s preferences in grip length, grip size, as well as slide length and sight radius are all highly desirable features. Why stop there, when you can have even more customization options when upgrading to a drop-in GGP320 slide. 

Just like our GGP17/19 and SPG43 slides, these GGP320 slides offers enhanced aesthetic features, increased grip serrations and an improved coating without compromising function. We also took our hybrid MRDS optic cut and added a third option, the SIG ROMEO1. Now you have to option to use a ROMEO1 as well as a Trijicon RMR or Leupold DeltaPoint Pro right out of the box without using bulky adapter plates that only raise the optic further above the bore axis. Available in Grey or Black DLC finish for corrosive and abrasion resistance, the GGP320 will also be available in FDE Cerakote. The GGP320 is a drop-in install that comes with all the enhancements that professional handgun shooters have come to expect from Grey Ghost Precision.


  • Stripped slide machined from 416 Stainless Steel for tighter-than-factory-tolerances

  • Available in Black and Grey DLC (Diamond Like Coating) or FDE Cerakote

  • 9mm Compatible only

  • Optic cut compatible with Leupold DPP, Trijicon RMR and SIG Romeo1 and Romeo1Pro (if the slide was made after January 1st 2021) and supplied screws/shim plates

  • Not Compatible with Vortex or Aimpoint Optics
  • Includes G10 Cover Plate when not running an optic

  • Version 1 Slide Pattern with aggressive serrations an window cuts

  • Compatible with SIG P320® Full-Size and X-Five* grip modules
    *X-Five barrels are not compatible with GGP320 slides due to its profile. Please use a standard full size 320 barrel.

  • Optics not included

  • Completion parts not included

  • To be used with brass, factory loaded ammunition 

Full Size | 8.84 oz



GGP320 Version 1 available in Full-size, with finishes in Grey DLC, Black DLC, and FDE Cerakote.


Please Note : All sights should be installed by a gunsmith. Discounted barrel offer only applies to regular priced slides and barrels (no blems) and cannot be combined with other sales and promotional offers.

“SIG” and "P320" are federally registered trademarks of Sig Sauer, Inc. and are two of many trademarks owned by Sig Sauer, Inc. Grey Ghost Precision is not affiliated with nor endorsed by Sig Sauer, Inc.





13 Reviews

  • 5
    Ggp P320C Slide V1

    Posted by JD on May 12th 2020

    Beautifully flawless product. Amazing finish, shipped fast and great customer service. These guys are awesome. I'll be back for other builds. - Happy Customer

  • 5
    Great Product with Amazing Finish

    Posted by Sabian Toussaint on Jan 2nd 2020

    All I can say about my V1 compact slide, grey DLC is that this slide meets my expectation and more. The finish is so slick that I'm not going to paint over it, the cuts are pretty neat and the different optics options are perfect for future changes!

  • 5
    P320 compact Slide

    Posted by Charlie on Dec 28th 2019

    Great slide! Quality, fit, & finish is superb. If your looking to upgrade your slide this one is worth a look. Fitted mine with an RMR on an X-frame and am happy with the set up.

  • 5
    320c slide

    Posted by Tim on Oct 14th 2019

    I bought the 320c slide so I could mount an RMR. I knew grey ghost is known for quality but the fit and finish on the black dlc slide is outstanding! There isn’t a flaw or tool mark anywhere. The coating is beautifully even and well executed. The shim for the RMR is as unobtrusive as possible and looks fantastic when installed on the gun. Over all this is money extremely well spent.