I know this is old news to most of you but im new to Glock so here goes...going to buy a 23 for carry. How simple is the 9mm conversion? Barrel and mags? Or is there more to it? Thanks
Glock 23 conversion to 9mm
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Cw1023
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Do you use the G23 mags for 9mm or do you have to use 9mm mags? Also, do you have to change the extractor or ejector for better reliability? I only ask 'cause I don't know, for sure, and my son has a G23.
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3,190 Posts
Please explain how a .40 extractor works on a 9mm
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.40 Glocks are very versatile. They can be converted to shoot 9mm and 357Sig.
For 9mm, you need a barrel and 9mm magazines
For 357Sig, you just need a barrel (40 mags work fine for 357Sig - which is basically an necked down 40)
And no, you can't convert your 9mm Glock to 40 as easily. The 9mm breechface is too small for a 40.
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1,998 Posts
The differences are minuscule. The 40 extractor is an unofficial cure for erratic ejection with 9mm Glocks when other cures failed. By all means, if a 9mm extractor is available and works use it.
Not all hope is lost. There are several complete Glock 23 and 27 uppers on EBay for less than $300.
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971 Posts
I have one that has been converted but have ejection issues with it. Not reliable at all. Lonewolf barrel and spring. As a matter of fact I have put it back to .40.
Finestkind
Finestkind
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I've owned a number of conversion barrels for Glocks. Currently have four to convert the 35,22,23,27 40/9. All have been Glock reliable after adjusting OAL on some bullet profiles. The Lone Wolf conversion barrels typically have a short leade, which may require some OAL adjustment if shooting reloads. When I first used the conversions, I changed the extractor, spring loaded bearing, and ejector. Soon found out my guns ran reliably with only a barrel and mag change. I currently run them in IDPA/USPSA in both .40 and 9mm, depending on the division I'm shooting.
s45
s45
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With my 27 just used a lone wolf 9mm barrel and 9mm mags . And for range use try using .40cal mags they work in mine but I would not use them for concealed carry
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Can you tell us what kind of ejection issues you have had,
BTFace, what?
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9,135 Posts
How many rounds have you fired from your conversion barrel and
how many jams have you had with it to not trust it for CC?
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I found the LWD barrel to have problems with commercial reloads.
Factory new UMC, WWB, etc seemed to run fine.
The factory armorer instructors will tell you to use the 9mm firing pin when converting .40 -> 9mm, because of the concern for pierced primers; although I've never heard of anyone having this issue.
You can't simply use the OEM 9mm barrel in a .40 because the barrel OD of the 9mm is smaller; but you can use the .357 SIG OEM barrel in a .40 [and vice versa] as the barrel OD's are the same.
Factory new UMC, WWB, etc seemed to run fine.
The factory armorer instructors will tell you to use the 9mm firing pin when converting .40 -> 9mm, because of the concern for pierced primers; although I've never heard of anyone having this issue.
You can't simply use the OEM 9mm barrel in a .40 because the barrel OD of the 9mm is smaller; but you can use the .357 SIG OEM barrel in a .40 [and vice versa] as the barrel OD's are the same.
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2,294 Posts
In a way that is why I prefer a Glock 23 converted to 9mm vs a Glock 19. The extra thickness in the barrel wall giving a bit of extra weight to the gun.
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You can buy a lone wolf 9mm conversion barrel I would be just as comfortable carrying it as my 40 barrel. You practically have a g23 and a g19
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Just make sure you buy Glock 19 mags and mark them to where you can easily identify between the mags
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