GS Double Diamond Threaded Barrel for Glock Gen1-4

Fits great for my Glock 34 gen 4 looks great!

Outstanding service great barrel. Due to tight tolerance I had to install the slide with magazine well pointing to the ceiling (upside down from normal) I had to call customer service to figure this out thanks John N. Only fired about 25 rounds thru new barrel but I am very impressed with how the gun feeds and much better accuracy than OE. Polished ramp is amazing!!!

Works great noticable difference in accuracy along with my other mods in my gen 3 g22. Good buy.

Fit perfectly and works great in my G19 gen 3

I build competition level firearms for 3Gun, USPSA, IDPA, and IPSC. I'm not easily impressed and don't usually take the time to write a review for purchased components.

I expect 2" groups out of most pistols. And today, that all changed! I took a new 3Gun pistol to the range for its first test firing. One of the used components for this Glock 34 was a Double Diamond threaded stainless steel barrel.

I walked the Vortex Venom shots into a bullseye setting and then fired 3 rounds on a fresh target and checked it out. I then fired 7 more shots and ended up with a 10 round 1" group! For me, that's the very best group I've ever had with any pistol!

All future builds will have this barrel!!!

With the stock 10mm barrel I had a 5" pattern at 20 yards. I now have a 3-4" pattern. I am waiting on my stamp for a can and I have the slide in for weight reduction cuts and a RMR cut. This will be a hard hitting race gun.

I am that weirdo who wants a subcompact with a (long-ish) threaded barrel.
This (stainless) looks great on my black g26 p80, which originally had a flush crown stainless.
The quality far exceeds the barrel that came with my Patmos Judah g26.
I removed a star for two reasons: the barrel is a bit long on the g26 by about 1/4", purely an aesthetic issue, and more of an issue is the fact that the thread protector comes loose all the time, even if not shooting! It needs some kind of high heat nylon or rubber washer to keep the protector on. I bought a gold thread protector from GS, but it didn't help any.
Currently I am using several layers of high-heat teflon and that works reasonably well. So be advised, get some teflon tape.

Bought the SS threaded barrel - Fit perfect in firearm and I test loaded normal ball ammo and it cycled fine. However, Lead nose rounds (bear loads) jam each time and do not feed properly.
Kind of disappointed as I bought this for my Alaskan pistol. I haven't fired it yet, but I have no worries about it eating normal ball ammo.

Great Barrel out of the Box
No Issues whatsoever.
The O-ring story is mind boggling, if you shoot your Gun a lot an O-ring will distort or even melt and make a mess, just a bit blue Loctite will take care of it, also Loctite make's a stick which is even better.

Just as described, product is great, but I came to write a review about their customer service, it's even greater! Bought over memorial day weekend, even with that craziness increase in traffic, they were able to get it delivered to me across the nation to the coast in less than a business week! Everytime I asked for an update whether if it was via text, email, etc, they get back to you in a quickness!