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Glock G23 gen4 to 357 sig?

This is a discussion on Glock G23 gen4 to 357 sig? within the Guns forums, part of the Gun Forum category; I recently purchased a G23 gen4 and wanted the option to covert to 357sig and use as a carry gun. I have read many thread's ...


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Old 05-16-2020, 11:08 AM   #1
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Glock G23 gen4 to 357 sig?

I recently purchased a G23 gen4 and wanted the option to covert to 357sig and use as a carry gun. I have read many thread's that people have had no issues and replaced nothing but barrel. There were others that had feeding issues. i also read that the gen4 models have different magazine follower, trigger housing and extractor and different rear sight height! I really don't want to completely rebuild my G23. Will my gun be reliable to use as a carry gun with only the barrel and magazine followers replaced?
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Old 05-16-2020, 11:15 AM   #2
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Your complete rebuild will take 5 mins max. I can post up some pics of the ejector and follower later.

Buy an OEM barrel directly from Glock. Shoot. Evaluate.

Yes sights are different height. 2” @ 25 yards difference. The pistol is designed to shoot 8” @ 25 yards. Odds are you’ll be OK with the POI shift.

Ejector, not extractor. extractor is the same. Ejector is number 30499. It’s $7 from glockmeister. The 357 ejector’s face has a 20 degree angle or so, that the .40 does not. That only changes the direction of the ejection though.

Magazine follower...if it’s a problem just buy 357 Sig mags on Gunbroker. Don’t jack with changing out the follower. The coolness of the G23 is 2 cartridges 1 platform. It’s ok to have .40 mags and 357 mags
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Old 05-16-2020, 11:54 AM   #3
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I would like to swap between the 40 and 357 and that's why i don't want to change to many parts. I contacted Glock to order an oem 357sig barrel. They will only ship requiring an adult signature. I am not home during the usual delivery times so that does not work for me! I already ordered and jacked around with changing the followers on some of my 40 mags!
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Old 05-16-2020, 12:26 PM   #4
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I have a Gen III G-35 that also have an .357 barrel for, I haven't change anything to fire .357 Sig but the barrel, but it is a Gen III though.
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Old 05-16-2020, 12:36 PM   #5
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Why would you want to modify a carry gun in this manner?
I'd just go get a Glock 32 if 40 wasn't doing it for me.

Range gun, do whatever you want.
I barrel swapped my 229 and it was fine.
I was running 10 / 6 sight setup specifically to accomodate 180gr 40 and factory 357sig.

I totally get the concept of a Glock can live in an evidence lockup vs anything I actually care about or enjoy for recreational reasons.
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Old 05-16-2020, 12:43 PM   #6
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Why would you want to modify a carry gun in this manner?
I'd just go get a Glock 32 if 40 wasn't doing it for me.

Range gun, do whatever you want.
I barrel swapped my 229 and it was fine.
I was running 10 / 6 sight setup specifically to accomodate 180gr 40 and factory 357sig.

I totally get the concept of a Glock can live in an evidence lockup vs anything I actually care about or enjoy for recreational reasons.
The G23 and G32 are dimensionally the same. It’s not a “conversion” since the .357 Sig is a .40 below the bottleneck. Carry integrity is unchanged.
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Old 05-16-2020, 01:21 PM   #7
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I have a GLOCK 23 that I can’t remember ever shooting 40 S&W in...the GLOCK 357 SIG barrel and in my case a change of sights and it’s been a problem free “G32”...to be 100% I’d recommend the 357 SIG followers too...

I also have a Storm Lake 9mm conversion too that’s also been problem free but that’s another story...

Bill
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Old 05-16-2020, 01:32 PM   #8
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The Gen 3 Glock 31 & 22, 32 & 23, and 33 & 27 are identical guns except for the different barrels and magazine followers. The Gen 4 models have slightly different ejectors too. Typically changing the barrel is all that is required to shoot .40 S&W from your .357 Sig or vice versa. I have a Gen 3 Glock 22 with an OEM G31 barrel and it functions flawlessly! I'm a big proponent of the barrel swap in Glocks if you are so inclined. It's sanctioned by Glock as they ask for your serial number when you buy the barrel from them and they specify in the paperwork that the barrel is only to be used in that gun.
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Old 05-16-2020, 02:21 PM   #9
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The .357 follower face has a less shallow angle contoured for the bottleneck. It’s slight and takes the right light to notice it
96921BCC-3589-4DEB-BF93-7738093F5D5B.jpeg

357 Sig is on bottom. Slight contour difference
BCD63567-8283-4435-A491-CCF897B68BB0.jpeg

Here’s the ejector. The 28926 is the .40. The one with hard to see numbers (30499) is the .357 ejector. The .357 Sig ejector face has an angle that the .40 ejector does not.
BC185C0A-320E-4F4C-961E-A9CAC1704D1A.jpeg
7C0BFFBE-A94A-49BB-8270-39ACBC5CE7D7.jpg
40FCF4F0-400E-491E-AE1F-85E50753FB33.jpeg

You get the right part when you order from Glockmeister. You won’t be so lucky if you order from others...

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Old 05-20-2020, 03:54 PM   #10
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Received my Glock 357sig barrel today, replaced the magazine followers and trigger mechanism housing on its way!
Attached Images
File Type: jpg IMG_5323.jpg (2.09 MB, 4 views)
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Old 05-20-2020, 04:30 PM   #11
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Quote:
Originally Posted by kjphilippona View Post
I would like to swap between the 40 and 357 and that's why i don't want to change to many parts. I contacted Glock to order an oem 357sig barrel. They will only ship requiring an adult signature. I am not home during the usual delivery times so that does not work for me! I already ordered and jacked around with changing the followers on some of my 40 mags!
I have never signed for firearm parts. Is that a Glock specific deal, or is there something about your address that requires signature.
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Old 05-20-2020, 04:47 PM   #12
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I have never signed for firearm parts. Is that a Glock specific deal, or is there something about your address that requires signature.
They told me it was because of the rash of packages being stolen from peoples door steps. I had to sign a waiver releasing Glock liability if it were stolen.
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Old 05-20-2020, 04:59 PM   #13
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I have never signed for firearm parts. Is that a Glock specific deal, or is there something about your address that requires signature.
"GLOCK Inc. is not responsible for and will not replace packages that show as delivered by carrier if the package is over $50.00 and is shipped without an adult signature required." I had my barrel shipped without the signature requirement...
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Old 05-20-2020, 05:03 PM   #14
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They told me it was because of the rash of packages being stolen from peoples door steps. I had to sign a waiver releasing Glock liability if it were stolen.
I get that. There is probably something in the system that tracks loss info by address. At my house, the idiots were putting packages on top of my mailbox, rather than bothering with going back my driveway. Evidently they trust my neighbors

I have 40S&W barrels for my G31 and G32. Never had an issue at the range. Of course, I was going the other way in caliber. I only did it because the ammo was more plentiful, and it was less to carry with me, instead of hauling complete 40s each time.
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Old 05-22-2020, 01:05 PM   #15
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The .357 follower face has a less shallow angle contoured for the bottleneck. It’s slight and takes the right light to notice it
Attachment 343508

357 Sig is on bottom. Slight contour difference
Attachment 343510

Here’s the ejector. The 28926 is the .40. The one with hard to see numbers (30499) is the .357 ejector. The .357 Sig ejector face has an angle that the .40 ejector does not.
Attachment 343512
Attachment 343516
Attachment 343514

You get the right part when you order from Glockmeister. You won’t be so lucky if you order from others...
You were correct, Glockmeister was sold out so i ordered from GlockParts.com and received the housing with the 28926 ejector
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