Glock OEM threaded barrel for Glock 19 - Gen 5 vs. Gen 3 - Question

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gunsrfun1

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I've searched the web on this question, but I get differing or unclear responses, so I will ask THR:
I want to get a Glock OEM threaded barrel for a Gen 5 and a Gen 3 Glock 19. (I just prefer OEM; I know there are alternatives.)
Glock in their armorer's parts list, lists two such barrels: Part # 47739 for the Gen 4, and Part # 47698 for the Gen 5, as follows:
1700766198119.png
So I am a bit confused, because the "conventional wisdom" seems to say that all gens fit all gens. But if that is the case, why would Glock have two separate part numbers for a Gen 4 and Gen 5?
I am aware that Glock changed the geometry a bit for the Gen 5 Glock 19 barrel, so my guess is that #47739 will fit Gens 1-4 only, and #47698 will fit the Gen 5 only. So you have to buy the proper part for your gen. Which means in my case, I would have to buy both, one for a Gen 3 and one for a Gen 5.
A lot of the aftermarket companies claim their threaded barrels fit Gens 1-5, adding to the confusion.
So what is the true story here? Will either of those parts fit BOTH a Gen 3 and Gen 5 Glock 19, or do I have to buy one of each?
I want typical Glock reliability for both guns, so keep that in mind.
Thanks
 
gunsrfun1 said:
So I am a bit confused, because the "conventional wisdom" seems to say that all gens fit all gens. But if that is the case, why would Glock have two separate part numbers for a Gen 4 and Gen 5?
Click to expand...
That’s not conventional wisdom for sure.

Gen 5 Locking block is actually based off the gen2-19. So it’s very different than gen4’s
 
Thanks. So you seem to be saying that I will really need to buy both of the Glock barrels: The "Gen 5" for my G5, and the "Gen 4" for my G3. Am I correct?

One question: Why do some of these aftermarket companies (usually the less expensive ones like Lone Wolf, Faxon, etc.) claim that their barrels work in G1 - G5, whereas the higher-end companies like KKM make a clear distinction in their barrels between G1-G4 and G5?
 
Ive been wondering the same thing and Im about to find out, as I ordered a LWD threaded barrel for a Gen 5 19 earlier this week. They list it as fitting all Gens.

I have a number of other LWD barrels and so far, they all have been drop in and never a problem.
 
Thanks trackskippy, please let us know how it works out. My understanding is that those "fits all gens" barrels do work in the Gen 5, but that the dynamics are a bit different. Something to do with the slope on the barrel hood in the Gen 5 barrels vs. previous generations. Unfortunately, the web "experts" are all over the place on this issue, and I have yet to find a definitive answer on this question. So we will see how it works for you.

And just to be clear on my original question for all: I know there are differences (such as the rifling) between the Gen 5 barrels and previous Gens. My only concern is whether those differences will impact functionality and reliability.
 
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But if that is the case, why would Glock have two separate part numbers for a Gen 4 and Gen 5?
Click to expand...
Even if it turns out that they are interchangeable (as far as fit and function), the Gen5 barrels are different from the previous generation barrels in terms of their rifling style and, apparently, chamber dimension. In other words, there is more going on with those different part numbers than pure interchangeability.
 
If they are interchangeable, and function and reliability are not affected, that is all I care about, and that is all I am asking about. I am not concerned about minute differences that have no impact on function or reliability. Sorry if that was not clear in my original post.
 
Gen 3, 4, and 5 barrels are interchangeable when it comes to the G19. All three generations use the same barrel locking lugs and the same locking block.There use to be a difference in the cutout for the recoil spring with the cutout being smaller on the Gen 3 barrels. But Glock and aftermarket manufacturers have been cutting the recoil spring cutout to Gen 4/5 specs for a few years now.

The same can not be said for the G17 barrels. Gen 3 and 4 uses longer locking lugs and a different locking block. The Gen 5 G17 now uses the same locking block and barrel lugs as the G19.
 
Thanks Bravo, and not doubting you, but this goes back to my original question: Why then does Glock offer a Gen 4 and a Gen 5 barrel for the G19?

And which one should I buy to use in both my Gen 3 and Gen 5 G19?

I am going to call Glock on Monday, but still want to hear thoughts.
 
If they are interchangeable, and function and reliability are not affected, that is all I care about, and that is all I am asking about. I am not concerned about minute differences that have no impact on function or reliability.
Click to expand...
Just trying to answer your question as to why there would be two separate part numbers. No one had addressed anything other than interchangeability yet and it seemed to me like that left the question pending. Apparently someone agreed with my assessment... "..this goes back to my original question: Why then does Glock offer a Gen 4 and a Gen 5 barrel for the G19?" 😁
 
JohnKSa said:
Just trying to answer your question as to why there would be two separate part numbers. No one had addressed anything other than interchangeability yet and it seemed to me like that left the question pending. Apparently someone agreed with my assessment... "..this goes back to my original question: Why then does Glock offer a Gen 4 and a Gen 5 barrel for the G19?" 😁
Click to expand...

Actually there is one main difference between the Gen 4 and Gen 5 barrels. Gen 4 barrels have the same type of rifling that the Gen 3 has and the Gen 5 has a different type of rifling and is called the Marksman barrel/rifling. Supposedly the Gen 5 Marksman barrels are more accurate and handle lead bullets better.
 
@gunsrfun1, that LWD barrel showed up this morning. It dropped right in and functions as expected, and as the others (not Gen 5 guns) I have did. Comparing it side by side with the factory barrel, I see no differences in the lugs or anything else that stands out. Everything is as smooth as the factory barrel when you cycle it.

I wont get to shoot it til later in the week. Deer season started here today and they hunt the range I shoot on. Ill let you know how it goes, but Im not expecting any drama. :)
 
12Bravo20 said:
Actually there is one main difference between the Gen 4 and Gen 5 barrels.
Click to expand...

Aside from the inside I believe they changed the hood too.



My 0.02
All "drop In" barrels rely on loose tolerances, therefore results may vary considerably
 
tarosean said:
Aside from the inside I believe they changed the hood too.



My 0.02
All "drop In" barrels rely on loose tolerances, therefore results may vary considerably
Click to expand...
IF there was a change it was just the slope of the hood at the front. A gen 5 barrel still works fine in a Gen 4 or Gen 3 slide (with recoil spring adaptor)
 
I've had my G19 OEM barrel since Gen 3. Through Gen 4, and now only have Gen 5 in my G19's. It has worked in all.

Never had a Gen 2 so I cant speak to that.
 
I put a Faxon threaded barrel in my Gen five Glock 19 because they stated that it works fine in gen 5 and the earlier ones. Faxon barrels are underrated as far as rifling goes , lots of race gun builders for high end comp guns use them, but of course they hand fit them. Mine works fine with the two different 9mm suppressors I use on it. It also is very accurate, I'd say at least as accurate side by side as the OEM barrel is . Also the barrel appears to support the case well, the fired cases show less swelling than the stock barrel did, feeding has been flawless even with my Lee gang mold cast bullets .
 
gunsrfun1 said:
I've searched the web on this question, but I get differing or unclear responses, so I will ask THR:
I want to get a Glock OEM threaded barrel for a Gen 5 and a Gen 3 Glock 19. (I just prefer OEM; I know there are alternatives.)
Glock in their armorer's parts list, lists two such barrels: Part # 47739 for the Gen 4, and Part # 47698 for the Gen 5, as follows:
View attachment 1181086
So I am a bit confused, because the "conventional wisdom" seems to say that all gens fit all gens. But if that is the case, why would Glock have two separate part numbers for a Gen 4 and Gen 5?
I am aware that Glock changed the geometry a bit for the Gen 5 Glock 19 barrel, so my guess is that #47739 will fit Gens 1-4 only, and #47698 will fit the Gen 5 only. So you have to buy the proper part for your gen. Which means in my case, I would have to buy both, one for a Gen 3 and one for a Gen 5.
A lot of the aftermarket companies claim their threaded barrels fit Gens 1-5, adding to the confusion.
So what is the true story here? Will either of those parts fit BOTH a Gen 3 and Gen 5 Glock 19, or do I have to buy one of each?
I want typical Glock reliability for both guns, so keep that in mind.
Thanks
Click to expand...
Have you tried to swap your G3 and G5 barrels? Not saying to fire a round, but check for fit?
 
gunsrfun1 said:
So I am a bit confused, because the "conventional wisdom" seems to say that all gens fit all gens. But if that is the case, why would Glock have two separate part numbers for a Gen 4 and Gen 5?
I am aware that Glock changed the geometry a bit for the Gen 5 Glock 19 barrel, so my guess is that #47739 will fit Gens 1-4 only, and #47698 will fit the Gen 5 only. So you have to buy the proper part for your gen. Which means in my case, I would have to buy both, one for a Gen 3 and one for a Gen 5.
Click to expand...
#47739 barrels have a slope on top of the barrel hood to enhance reliability.
#47698 barrels do not slope and are for Gen 5’s.
 
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What's your purpose for buying a threaded barrel?

I have Gemtech Lunar 9 Suppressor and have a Gemtech threaded barrel for my Gen 3 Glock 19. In general it's best to get accessories like threaded barrels from your suppressor manufacturer.

I built a couple Polymer 80 Glocks and used Combat Armory barrels for them. They work just fine. I've read on other forums that the CA threaded barrels work fine for suppressors as well. However, I'm not ready to trust them with my expensive suppressor that took a year for approval.

Gemtech Lunar 9mm.JPG
 
drobs - Never heard that before, but it doesn't mean you are wrong. Can you explain why it's better to use the same barrel/suppressor combination from the same manufacturer, vs. using a Glock OEM threaded barrel and a suppressor from whatever other company. After all, I would think that if a suppressor won't function properly with a Glock OEM barrel, it may not be that good of a suppressor.
Thanks
 
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