P320 Modern Classic Slide, 4.7” Bull Barrel

(9 customer reviews)

$950.00

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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 designed by our team. It is optimized for USPSA Carry Optics.

Includes custom slide, custom-designed and fitted 9mm bull barrel, Grayguns Guide Rod and Spring, and all internals. Options available will vary, including your choice of DLC or bead blast finish. The bead-blasted slide shown is a representation of the finish. New photos are coming soon.

Ensure you read the full description below before ordering.

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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If you order an optic or sights for your slide from Grayguns, we will install it for free.
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Description

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) or bead blast finish. Each custom slide features the iconic Grayguns logo.

Design & Functionality

“Factory barrel-fit dimensions are dictated by the possible, wide dimensional extremes between FCUs and slides. Drop-in aftermarket barrels are reverse-designed from factory dimensions as a starting point and are thus even “looser.” As a result, you see a lot of pre-lock jams, failure-to-feeds and accuracy issues from barrels that may look pretty but don’t fit or shoot worth a hoot. Few P320s deliver the accuracy of which they are capable.

I designed our barrels to eliminate gross vertical slop when out of battery for reliable feeding and function. We individually fit each of our barrels to the slide it’s serialized for a minimum clearance working fit in all axes. They group exceptionally well. In addition, our lockup values yield a softer recoil impulse and smooth sight return, with greatly enhanced durability. Nothing else available compares.”

Bruce Gray
President, Grayguns

Bruce Gray

Differences between the Lockwood and Modern Classic 4.7″ Bull Barrel Slides

In short, the primary difference is simple aesthetics, but Bruce Gray writes more about the slides in this post.

Package Includes

  • Custom Grayguns Modern Classic designed slide
  • Your choice of Black Diamond-Like Carbon (DLC) or bead blast finish
  • Grayguns Guide Rod with Recoil Spring
  • A custom Faxon bull barrel manufactured to Grayguns specifications and hand-fitted for the 4.7-inch slide length.
  • OEM internals (Ejector, Striker Assembly, and Slide Cap)
  • Choice of optic cut or OEM dovetails only

Different P320 XFive Slght PlatesGrayguns P320 Slide – 4.7-inch – Additional Information

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

Our Grayguns Lockwood 4.7″ slides cut for the Romeo1 Pro have factory P320 XFive Legion optic cuts that will fit the newest adjustable rear sight plate, an OEM feature of the P320 XFive Legion pistol.

SIG changed the design of the sight plates when they introduced the P320 XFive Legion. Our slide cut for the Romeo1 Pro will only fit the XFive Legion adjustable rear sight base. Components can be mixed and matched, so you must check your slide and sight plate. Our Romeo1 Pro slides will fit the plate shown on the left.

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

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9 reviews for P320 Modern Classic Slide, 4.7” Bull Barrel

5.0
Based on 9 reviews
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1-5 of 9 reviews
  1. awesome. nothing more to say

  2. This is a very high quality product i love the finish and weight is more than i expected 100% satisfied

  3. Softer shooting indeed, I am pleased with the increase in accuracy. This has been a great choice. My thanks to Gray guns!!!@

  4. My first shooting impression was a softer recoil impulse than the original stock slide. I used the 14 lb. yellow marked spring that came with the 4.7 classic slide. Ammo 115 grain blazer brass. Just over 1300 rounds without a stoppage. I appreciate the build and fit quality, resulting in exceeding my expectations. If your need is accuracy and speed this slide delivers.

  5. I saw my friend Rob Lamen’s Lockwood slide at the club and I knew I wanted one too. Once I got on the Grayguns website I saw this Modern Classic slide. Now I start going back and forth between the two choices. I read what Bruce wrote about what was the difference between the two and immediately went to my safe and looked at an identical model of the first pistol I ever fired over 50 years ago. I now have a little bit of nostalgia with me when the USPSA matches start back up in the spring but with a very accurate and reliable pistol. After zeroing in the dot I was able to put every shot in that little back circle on the B2 NRA slow fire target.

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Disclaimer

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.