Grey Ghost Precision

GGP320 Slides

(11 Reviews)
Current Stock:
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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

  • Version 2 Slide Pattern with checkered texturing and no window cuts

  • Compatible with SIG P320® Full-Size, X-Five*, Compact, Carry and X-Carry 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 

Compact | 7.76 oz
Full Size | 8.84 oz



GGP320 Version 1 and 2 slides available in compact lengths and Version 1 in Full-size, with finishes in Grey DLC, Black DLC, and FDE Cerakote.


Please Note : All sights should be installed by a gunsmith

“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.





Reviews (11)

320 slide

Written by Huffman on Mar 9th 2021

Excellent quality, got exactly what I ordered, and customer service was great. Could not have asked for anything more.

P320 Slide review

Written by Matt on Mar 9th 2021

Gorgeous slide, very well done! Fit and finish are great, slightly different and smaller overall dimensions from the stock slide on an m17 but that is a good thing. The ability to select multiple RDS makes it even better. Glad I made the purchase, GGP did a great job on this one.

High quality slides

Written by Tyler Ziel on Feb 20th 2021

Slides are great. Machining is clean and the finish is good. No reliability issues so far with about 4k rounds down range. Ive only mounted RMRs to my compact and full size slides but thier were no issues with fit. My only complaint is they come with allen screws instead of torx. While I have not rounded them out, I fear that eventually I will seeing as I change batterys every year. All things considered, these are fantastic slides.

P320 V1

Written by Tristan on Aug 12th 2020

Only thing I can complain about is that the screws for my RMR kept walking out but I think I got it under control. Otherwise the Cerakote looks excellent, slide cuts are super clean, and everything fits as it should..

P320 compact

Written by George on Jul 31st 2020

As advertised, it’s bad to the bone.

P320C slide

Written by Scott on Jul 6th 2020

First, Grey Ghost has awesome costumer service! The slide is beautiful. Paired with a Grey Ghost threaded barrel. It's a work of art. Thanks Grey Ghost for your great service. I will be a repeat costumer.

GGP320 Slide

Written by Austin Dabrowski on Jun 25th 2020

Absolutely love this slide! Great product and great customer service! Very friendly and helpful! Will definitely be a returning customer!

Ggp P320C Slide V1

Written 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

Great Product with Amazing Finish

Written 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!

P320 compact Slide

Written 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.

320c slide

Written 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.

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