Glock 23 40/9 conversion

**Trainer44455** · February 11th, 2013, 05:12 PM

This is for range use only......i have a coversion barrel for

my glock 23 40 to 9mm . Can use the 40 mags to shoot 9mm range use only.

**CartBone69** · February 11th, 2013, 06:38 PM

Originally Posted by Trainer44455

This is for range use only......i have a coversion barrel for

my glock 23 40 to 9mm . Can use the 40 mags to shoot 9mm range use only.

9mm rounds fit into you 40 s&w mag with out modifications? I also have a conversion barrel i just bought 9mm mags.

**firebird.77** · February 11th, 2013, 07:26 PM

You will need Glock 9mm mags (Glock 19 mags will fit flush)

**Trainer44455** · February 11th, 2013, 09:55 PM

what needs to be replaced if I want to carry it as a 9mm, to make it 100%reliable, I already have Glock 19 mags

Extractor I assume, what else

Thanks

**sbmania** · February 11th, 2013, 10:40 PM

I was told by a Glock armorer at the last Oaks show that nothing else is needed to convert a G23 to a 9mm "G19" except the barrel and new magazine. He said everything else is the same - extractor, recoil spring, etc. He also said the barrel to convert to 9mm is just a standard G19 barrel, nothing special about it.
You do need to use Glock 9mm magazines in place of the G23 40 mags.
In any case, I bought a 9mm Lone Wolf barrel and it works perfectly in a G23.

**Ryancanon** · February 11th, 2013, 11:23 PM

I have a Glock 27 and have a 40-9 barrel. Basically the same thing but subcompact. Just swap the barrel and use the 9mm mags. Very simple. I've never had a problem with mine. I use it as a 9mm more than a 40sw. Once I get a dedicated 40sw then my G27 will always be a 9mm

**firebird.77** · February 12th, 2013, 07:58 PM

Originally Posted by sbmania

I was told by a Glock armorer at the last Oaks show that nothing else is needed to convert a G23 to a 9mm "G19" except the barrel and new magazine. He said everything else is the same - extractor, recoil spring, etc. He also said the barrel to convert to 9mm is just a standard G19 barrel, nothing special about it.
You do need to use Glock 9mm magazines in place of the G23 40 mags.
In any case, I bought a 9mm Lone Wolf barrel and it works perfectly in a G23.

I would have GUESSED that the barrels are different because of the OD of the barrel. I know you can fit a .40 barrel in a 9mm slide, so how is it that a factory 9mm barrel will fit in a .40 slide without there being excess clearance around the barrel?

I was under the impression that 9mm "conversion" barrels have the OD of a .40 bbl and ID of a 9mm bbl