Glock conversion barrels

I bought a Lone Wolf conversion barrel and a G17 magazine.

My G22 works just fine with them. I have shot hundreds of 9mm rounds with zero failures.

Gosh, I've done this on literally dozens of pistols for me and my fam. I have found that a drop in barrel and proper magazine, with no extractor / ejector changes, works just fine.

I have been using a 40-9 barrel for many years in a G22. No mag change, no extractor change, and it runs 100% flawless. I use the lone wolf barrels.

I bought a brownells 9mm conversion for my Glock 23, runs great. Just drop it in and add 9mm mags.

Bought a buddy a 10-40 barrel from lonewolf and it runs like a top on the factory recoil spring and 10mm magazine.

Do you guys regularly flip flop back to .40 or is it a one way conversion?
If the latter, does a .40 + barrel + magazines cost less than a native 9mm?

Jim, i always use the 9mm barrel. i barely ever use the 40 barrel. At the time, i picked up G22 for less then $300. i paid 75 for the barrel. Never used 9mm mags and extractor. It was less then a 9mm pistol and i have the option for 3 calibers from that once pistol. the 9mm is only good for 9mm but the 40 can convert to 9mm or 357 sig with just a barrel swap.

American_Fusilier said:

Glock conversion barrels. Specifically 40 cal to 9mm.

What have been your guys experiences? Do you do the full conversion? Or just the extractor? Or nothing?

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I started using 40-9 conversion barrels when I switched my USPSA caliber from 45ACP/9mm to 40S&W so I could practice with cheaper 9mm. Shot several hundred thousand rounds without issues. I simply swapped out the barrel and used Glock 17 magazines for more reliably feeding. Never had to swap out the extractor and I experienced good extraction/ejection. I usually run high range load data with my range practice/GP range blasting 9mm reloads using factory 40S&W recoil spring assemblies.

New/newer generation 40S&W magazines will even reliably feed and chamber 9mm rounds (especially with newer/stiffer mag springs) so try using 40S&W magazines before buying 9mm magazines.

I currently run BCA, KKM, Lone Wolf, Tactical Kinetics 40-9 conversion barrels in my Glock 22/23/27.

Jim Watson said:

Do you guys regularly flip flop back to .40?

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Yes.

After the range session, factory 40S&W barrels go back in and Glocks are ready for defensive use again as they run reliably for several thousand rounds without cleaning.

BTW, I do have 40S&W aftermarket barrels to shoot lead/coated lead bullets and reserve plated/jacketed bullets for factory barrel use.

Robbins290 said:

9mm is only good for 9mm but the 40 can convert to 9mm or 357 sig with just a barrel swap.

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You can convert 9mm Glock frames to 40S&W by using 40S&W slides and barrels.

Livelife, yes, yes you can. But by the time you get a new slide, barrel and mag. It would be cheaper to get a dedicated 40. (least last time i priced it out, which was over 10 years ago)

Robbins290 said:

by the time you get a new slide, barrel and mag. It would be cheaper to get a dedicated 40.

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True, especially if you got one of the cheaper police trade-in Glocks around $350.

Ya, like i mentioned before, i got mine for less the 300 after shipping and transfer fee. I bought up a few of the 40's on the surplus market. Which i am glad, because the local shops only seem to have 40 ammo in stock. Well worth it.

American_Fusilier said:

Glock conversion barrels. Specifically 40 cal to 9mm.

What have been your guys experiences?

Do you do the full conversion? Or just the extractor? Or nothing?

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I "converted" my G-23 to G-19
G-35 to G-34
G-27 to G-26
All by just using dedicated REPLACEMENT barrels and then 9mm magazines.
All run very well and no issues to report.
Good luck finding parts now.

scaatylobo said:

Good luck finding parts now.

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BCA Glock 22 40-9mm conversion threaded barrel IN STOCK for $101 - https://www.bearcreekarsenal.com/bc...rel-stainless-steel-finish-threaded-unbranded

You are very welcome.

I recently bought a used G35 that had the original .40 barrel and a lone wolf 9mm conversion barrel. Ive only used the .40 because I specifically wanted a full size .40 gun. I did some quick googling and also found i can get a .357 sig barrel for about $130 and it will most likely run fine with the factory .40 extractor and the factory .40 mags

I got my LE trade-in Glock for a bid of $280 (plus shipping and FFL). It came with the box and 2-3 mags.

The Lone Wolf conversion barrel was on sale for $99. Lone Wolf had a G17 magazine for something like $28. Shipping was free.

I can take out my G22 and shoot a box of 40 caliber through it with the original barrel and mags. Then I can field strip the Glock, insert the 9mm conversion barrel, reassemble it, and insert the G17 mag (that all takes less than a minute). Then I can shoot a box of 9mm ammo through it.

You can go back and forth as often as you want. Switching barrels takes about 30 seconds if'n you're sober and the sun ain't in your eyes.

IIRC, the Model 22 will also take a conversion barrel for 357 sig.

The BCA 9/40 barrels work great, they were under $50 pre-Covid. They are more now. I have one in my carry gun right now, on a long trip. I could have taken many other guns, but I have zero worries about this set up. It just works.

Let me jump on the dogpile. I bought a Lone Wolf 9mm conversion barrel for my Gen 4 G27, added some G26 mags, and it has run like a top for hundreds of rounds with no failures of any kind. I’ve since added some G19 and G17 mags with X-Grips to fill the extra space, which make it a very flexible little gun.

GoPappy said:

Lone Wolf 9mm conversion barrel for my Gen 4 G27, added some G26 ... G19 and G17 mags with X-Grips to fill the extra space, which make it a very flexible little gun

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Just bite the bullet and get the 33 round magazine.

I bought a Lone Wolf 9mm conversion barrel for my G22, along with a G17 RSA. I use the stock extractor and .40 magazines. It has not run perfectly, but is more than adequately reliable for range work.

I now have a KKM conversion on the way for my G23, along with a G19 RSA, and also a 9mm mag for each gun (along with orange baseplates to avoid magazine confusion). I guess I'll find out if the cartridge appropriate magazines help reliability or not.

The reason for the conversion barrels is two fold. Firstly, 9mm is cheap and low recoil, so learning to shoot quicker with accuracy is easier. Secondly, it's not a bad idea to have some caliber versatility, but I don't necessarily want to buy other guns just for that reason.

I usually carry and practice with .357 Sig in these two piatols using KKM conversion barrels. They are very good. The stock .40 barrels don't see much use these days.

WrongHanded said:

.. . along with a G17 RSA ... aIong with a G19 RSA

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FYI, RSA replacement is not necessary for conversion barrel use.

LiveLife said:

FYI, RSA replacement is not necessary for conversion barrel use.

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That's good to know. My assumption had been that as cheap 9mm range ammo has fairly mild recoil, the action might not cycle reliably. I honestly haven't even tried it with the .40/.357 springs.