Chad Wallace

July 2, 2022

Grey Ghost Precision, GreyGhost, Review, Sig Sauer, Slide

Grey Ghost Precision Sig P320 slide

Chad Wallace

July 2, 2022

Grey Ghost Precision, GreyGhost, Review, Sig Sauer, Slide

Grey Ghost Precision has been in the aftermarket pistol slide game for some time now. Not so long ago they introduced Sig P320 slides to their product line. I had been eyeing them since the introduction. Then Grey Ghost introduced an O.D. Green Limited Edition version. I love OD Green. So here I am, OD green slide in hand!

The Grey Ghost Precision Sig P320 slides come in two size versions. The Compact and the Full size, or GGP320C and GGP320. I received the GGP320 full size version 1. They are essentially the same for review purposes. I also believe the only difference between the Limited Edition OD Green and the standard versions is the color. Especially since they are all the same price. Both slides come “stripped,” Therefore you must install all the necessary parts to make it complete and functionable.

When looking at the GGP320, the first thing you notice is the optics cut. It is a multi optics cut that uses a shim system to mount the different optics. These shims position the optic so that it is mounted securely. The shims and screws are provided, so there isn’t a need to hunt around for the proper screws. If not using an optic, a Grey Ghost marked G10 cover plate is included also. The optics cut can be used with optics that have the RMR, Leupold Delta Point Pro, SIG Romeo 1, and SIG Romeo 1 Pro footprints. I ended up mounting a Swampfox on the GGP320 because it uses the RMR footprint. It mounted up securely and works great.

Now that we have moved past the optic, the GGP320 has some other noticeable features. Instead of being a completely solid slide like the stock P320, Grey Ghost put three window cuts toward the front of the slide. One is on the top and then there is one on each side of the slide. These lighten up the slide some and it also makes the barrel stand out a little bit. The top of the slide isn’t rounded like the stock Sig one is. Instead, Grey Ghost put a flat cut on top and an angle cut on each side of that. Standard iron sight dovetails are also machined in. Probably the most functional addition to the GGP320 is the aggressive slide serrations. Grey Ghost machines them into both the front and rear of the slide. These serrations are way grippier than the stock ones, but not enough to tear your hands up. Between the slide serrations they also put an inlet cut. In this inlet is “GGP” and “limited Edition” text. I like how the logo and text are not very large, I would say tasteful.

The Limited edition OD Green GGP320 slide, as well as the FDE option, are both cerakoted. The cerakoting puts a nice finish on the slide. However, mine does show some holster wear. I guess one could say it is the start of a battle worn finish. I am not worried about the wear since the slide is machined from 416 stainless steel and essentially won’t rust. Since I’m on machining. Grey Ghost says their slides have tighter tolerances. This leads to better performance. You can actually feel the difference. There is less noticeable side to side and up/down play in the GGP320 slide over the factory one. The GGP320 is so much better machined, that just installing it dropped the trigger pull on my pistol by ½ pound. This was with all the same parts as before, the only difference was the GGP320 slide. I was pleasantly surprised.

Now down to why you are really here, what are my thoughts? The GGP320 slide is top notch. I have had zero problems with it. I love the OD Green. The shim system is pretty easy to mount optics on. Recoil seems about the same. It runs pretty much any ammunition from 115’s up to 147’s without any problems. The machining of the slide is nice with no noticeable machining marks. The iron sight dovetails are tight, but not too tight. Plus, if you just have a P320 fire control group, this makes for an excellent addition to your “build.”

Grey Ghost Precision has done another excellent job with the GGP320 slide. The Limited Edition OD Green is different, but in a good way. It looks fantastic and performs just as well. If you are looking at building out a P320, or just want something that makes mounting an optic easy, this slide might be just what you are looking for. Go check out Grey Ghost Precision and all their pistol slides, you won’t be disappointed.

Firearms Insider Reviews - 8 Key Points

Claim to Fame:

Sig P320 slide with optics cut and enhanced features

Target Market:

Those building a P320 or those wanting a new slide option with optics cuts

FNBs (Features & Benefits of this product):

Full length P320 slide for 4.7” barrels
Machined from 416 Stainless
Tighter tolerances
For 9mm only
Optic cut compatible with Leupold DPP, Trijicon RMR and SIG Romeo1 and Romeo1Pro
Shim plate and screws for optics included
G10 cover plate
Weighs 8.84 ounces
Aggressive slide serrations
Front slide window cuts

What other aesthetic options or finishes are available?

Black and Grey DLC, or FDE Cerakote

What others are saying?:

5/5 stars at Rainier Arms

Nice addition to P320

Nice addition to P320.I have a P320 as a backup competition gun with a Leupold Delta Point Pro mounted with a EGW mount on the rear sight cut. Nice to have a slide with a RMR cut. It was a drop in fit, it only required a minor adjustment for the optic. Overall, the gun feels lighter, not sure if cycles any faster or reduced recoil, but it is a nice upgrade.

Link to other reviews:

Nothing spotted at the time of this review

Price point:

MSRP = $439.99

Retail = $412.79 at Primary Arms

I need it now! Availability:

Grey Ghost Precision or Primary Arms

Our Rating:

Pros:

Tighter frame fit
Multiple platform optic cuts
OD Green
Decreased trigger pull by ½ pound due to tighter tolerances
Drop on installation

Cons:

Holster wear on Cerakote

Score: 9.00 Amazing

Favorite Link: Walker Defense Research

Chad Wallace

November 13, 2017

Grey Ghost Precision, GreyGhost

Grey Ghost Precision G19 V1 Slide

Chad Wallace

November 13, 2017

Grey Ghost Precision, GreyGhost

Once upon a time in the Pacific Northwest, Grey Ghost Precision started making Glock slides and barrels. These are for the ever growing market of aftermarket Glock accessories. Well, as luck would have it, they sent me one of their G19 slides and match grade barrel for review. Because they sent both a slide and barrel, I am discussing both of them as one.

This slide is just beautiful! Okay, very useful also. They make the slide out of 17-4 stainless steel and black nitride coat it inside and out, hence the good looks. Since it is nitride coated, it should wear very well with even the hardest of use. It is a stripped slide, so all internal and external parts must be added. The slide I received was the V1. The V1 has angled front and rear cocking serrations. The front serrations are cut through the slide and gives a nice look of the barrel showing through. I really like how deep all the serrations are cut. You can really get a good purchase on them when cycling the slide or doing failure drills. There are also some grooves cut on the top front of the slide to help with user function. Grey Ghost also makes a V2 version that has a golfball style texture for grip. The V2's pattern does not extend through the slide.

I ended up mounting the combo on a Polymer 80 frame. Basically, it slides right on. The first really noticeable attribute, was how tight the lock up of the Grey Ghost barrel and slide were. Way better than any stock Glock I have used or felt. Since the slides are made to tighter tolerances, I wasn't super surprised. I don't know exactly what other magic they did, but the slide to frame fit is super tight and smooth.

Grey Ghost makes the slides with or without an RMR cut. The one the sent me has the slide cut for a Trijicon RMR. Rumor has it that Grey Ghost is also working on different red dot sight cuts. So, DeltaPoint Pro and Vortex maybe. I didn't use an RMR on it. But, the slide comes with a pre-installed cover plate. The cover plate is made out of G10 and has the Grey Ghost Precision logo laser engraved on it. For those of you that don't know what G10 is, it is a resin based composite used for handgun and knife grips. The non RMR slides also have the "ghost" lased on them. As does the Grey Ghost barrel, it is also engraved with the GGP logo.

I marked the "A" zone of the USPSA target, so you can get an idea of the 25yd accuracy

Grey Ghost tells me that they have seen an average of a 30% increase in accuracy over stock. This seems to be a pretty bold claim, but I believe it. I shot an offhand, 3" 5 shot group, at 25 yards. It was consistent at that range with different types of ammo. That is really good for me with blurry sights (I have aging eyes). I also have no problem shooting a 6" plate rack at 20yds with the slide/barrel combo. When I move the target in to 7yds, it shoots one ragged hole, if I do my part. The slide functions extremely well also. I just used a stock recoil spring assembly and only had 2 problems running 165 subsonic ammo (it shoots really light and is intended for suppressor use). It runs the 165's fine now, so maybe the slide just needed a little break in period. When I ran 115, 124, and 147gr ammunition through the pistol, it functioned without a hitch. The ammo was a variety of factory, handloads, and even some +P hollow points. I have around 600 round through it as of this writing, mostly 115 and 124's.

Grey Ghost's barrel is also a thing of beauty. They sent a 416R stainless steel threaded barrel. Yes, threaded 1/2-28 for a suppressor or compensator. They only list black, unthreaded on the website, so ask them if you want something different, I am sure they can help you out. These barrels use a proprietary twist rate, so who really knows what it is. But, I don't think it matters because of how well it shoots all different weights of 9mm. It also uses SAAMI spec match chambers and is cut to within +/- 0.003". When combined with the tight specs of the slide, you get a wonderful shooting combo.

I discussed how well the slide/barrel shoot. So I'll give some experiences while shooting. I have cycled the slide in the rain without feeling like my hand was going to slip off of the serrations. It is definitely better than the original small lines on a 1911. It shines while wearing shooting gloves. It almost feels like the gloves get caught in the grooves and really enhance the grip on the serrations. Performing press checks, using the front serrations, works well, if that's your thing.

These slides and barrels are available for Gen 3 and Gen 4 G19's and G17's. I really can't say enough nice things about the barrel and slide, they are really that nice. The black Nitride is better looking than a standard Glock finish. The slide has a good functional design. So if you are in the market to modify or build a G19, definitely go check out Grey Ghost Precision and what they have to offer.