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Old 02-25-2013, 20:03   #1
Midas001
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Glock 23 KKM Conversion experience

I have a Glock 23 and am considering purchasing a conversion barel. Can anyone share experiences with either a KKM vs. Storm Lake
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Old 02-25-2013, 21:04   #2
BMiracletx
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Can;t say about the KKM, but I have had two Storm Lakes, one went back due to repeated FTF, and I have MANY Lone Wolf barrels and have no problems with the Lone Wolf.
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Old 02-25-2013, 21:17   #3
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I hope they are good, I just got one for my G22 and plan to go to the range to test it out, if I can find some 9mm. The research I did seemed to claim the KKM was the best out there - more expensive than Lone Wolf, but at least you can get them.
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Old 02-25-2013, 21:32   #4
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Mine have all worked well and shot very accurate. You should be fine.
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Old 02-25-2013, 21:35   #5
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I have a KKM 6" tube for my G20.It noticeably improved the accuracy. I haven't chrono'd any loads out of it yet, but I would bet I get at least 100fps better across the board than with the OEM 4.6" barrel.

Oh, it has been almost perfectly reliable, shooting mostly Underwood ammo.
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Old 02-25-2013, 21:39   #6
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BTW don't forget to get yourself a G19 or G17 9mm magazine, you really don't want to feed 9mm through your .40cal mag. I hear it can be done, but is not that reliable.
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Old 02-25-2013, 21:42   #7
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Quote:
Originally Posted by chemboy View Post
I have a KKM 6" tube for my G20.It noticeably improved the accuracy. I haven't chrono'd any loads out of it yet, but I would bet I get at least 100fps better across the board than with the OEM 4.6" barrel.

Oh, it has been almost perfectly reliable, shooting mostly Underwood ammo.
I still need to get a 6" barrel for my G20...
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Old 02-26-2013, 02:06   #8
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All my KKM barrels have been accurate and reliable.
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Old 02-26-2013, 06:13   #9
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I have a KKM G32 barrel in my G23 and it works perfectly.
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Old 02-26-2013, 08:11   #10
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Originally Posted by BMiracletx View Post
Can;t say about the KKM, but I have had two Storm Lakes, one went back due to repeated FTF, and I have MANY Lone Wolf barrels and have no problems with the Lone Wolf.
This has been my experience as well. I've never had a SL run without having to be sent back.
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Old 02-26-2013, 09:54   #11
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KKM makes great barrels. I have a 4 Port for my Gen4 G21 and a 6" G24 barrel and I can't say enough good things about them. You shouldn't have any issues.

While my conversion barrel isn't a KKM, I use 9mm mags and a 9mm extractor.
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Old 02-26-2013, 10:09   #12
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Well I just came back from the range after trying the KKM in my G22 gen4. In fifty rounds I had four failure to feeds, three failures to eject and two failure to lock back. I am thinking it was the range ammo (I hope). The only ammo they had was PMC Bronze 115grn FMJ. I fired off 25 rounds of .40cal in the regular barrel and the gun worked without a hitch. IF not the ammo I am thinking maybe the stock recoil spring is too strong and I need to get a G17 spring (???)
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Old 02-26-2013, 10:39   #13
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Quote:
Originally Posted by plouffedaddy View Post
This has been my experience as well. I've never had a SL run without having to be sent back.
Have had several Storm Lake barrels and have not had any issues at all.
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Old 02-26-2013, 10:42   #14
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Have a KKM conversion to 9mm in a g23 and I have had no FTF even with cheap Blazer.
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Old 02-26-2013, 14:12   #15
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Quote:
Originally Posted by kirbinster View Post
Well I just came back from the range after trying the KKM in my G22 gen4. In fifty rounds I had four failure to feeds, three failures to eject and two failure to lock back. I am thinking it was the range ammo (I hope). The only ammo they had was PMC Bronze 115grn FMJ. I fired off 25 rounds of .40cal in the regular barrel and the gun worked without a hitch. IF not the ammo I am thinking maybe the stock recoil spring is too strong and I need to get a G17 spring (???)
Yep. The 22 has a heavier slide than the 17 and a stiffer recoil spring in the gen4s. So with 115gr range ammo, it is too weak to cycle the slide reliably. Try dropping down to a 14# recoil spring and I bet it will run like a champ!
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Old 02-26-2013, 14:29   #16
Tom D
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I shoot lead to put the issue behind me I put a KKM in my 34, totally pleased.

115gr thru 147gr under 2" at 25yds and moving back to 35 tomorrow if the weather hold.

No regrets or second thoughts. Thinking about having magna port do it to it.

+++ On NailShooters comment the brass damage to the brass is history. So much better.
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Last edited by Tom D; 02-26-2013 at 15:05..
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Old 02-26-2013, 14:37   #17
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I'm a little confused because on some sites they show the same part number for the G22 and G17 recoil spring :(

Last edited by kirbinster; 02-26-2013 at 14:38..
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Old 02-26-2013, 14:40   #18
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Originally Posted by chemboy View Post
I have a KKM 6" tube for my G20.It noticeably improved the accuracy. I haven't chrono'd any loads out of it yet, but I would bet I get at least 100fps better across the board than with the OEM 4.6" barrel.

Oh, it has been almost perfectly reliable, shooting mostly Underwood ammo.
I put the same bbl into my G20. I did not notice any diff in accuracy but the brass sure was in better shape when ejected from the gun. No more bulged brass and it fed 100% also!


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Old 02-26-2013, 15:17   #19
BMiracletx
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Originally Posted by kirbinster View Post
I'm a little confused because on some sites they show the same part number for the G22 and G17 recoil spring :(
They are the same for the gen3. For the gen4 there are different versions I believe.. someone correct me if I am wrong. I know Glock had to issue different RSAs for the gen4 9mms... did they change the 40s also?

Either way... you need to go lighter. Get a gen4 adaptor to use a gen3 aftermarket guide rod and a 14# spring.

Last edited by BMiracletx; 02-26-2013 at 15:18..
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Old 03-12-2013, 13:29   #20
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Well I got the G17 Gen4 recoil spring and tried it today with my KKM 9mm conversion barrel in my G22 and it worked great. Fired 50 115gr 9mm rounds and not a single failure. So much better than what was going on with the G22 spring.
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Old 03-12-2013, 21:22   #21
joeshdog
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KKM 40-9mm match

Just purchased a 40-9 conversion barrel from KKM for my 23. I used the 23 mags and all went well. Also put it in my 27 and used the 27 mags and worked perfectly again. From what lve read, the mags are the same its just less chance of loading the wrong ammo if the mags are marked 9mm and .40. That said, l am still getting correct mags when available.
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Originally Posted by Midas001 View Post
I have a Glock 23 and am considering purchasing a conversion barel. Can anyone share experiences with either a KKM vs. Storm Lake
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Old 03-12-2013, 21:34   #22
kirbinster
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The mags are not the same. Yes you can fit 9mm in the .40 cal mag but it may not be reliable. You cannot fit .40 cal in the 9mm mag.
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Old 03-13-2013, 03:56   #23
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Originally Posted by plouffedaddy View Post
This has been my experience as well. I've never had a SL run without having to be sent back.
Two out of three back to SL for the chamber being way too tight. I bought SL due to availability when I was shopping. After factory "redo", they run beautifully. Before someone asks why did I change from factory barrels that worked fine--to get a tighter chamber----lol
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Old 03-13-2013, 04:24   #24
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To those with FTFs in Storm Lake barrels, can you be more specific on the problems you've had? I recently bought a 9mm conversion Storm Lake and had pretty bad jam that took a pretty hard slap to dislodge. I had alot of different variables going on that day-- new barrel, hollow point ammo (all that the range had in stock), old G17 mag, and was benchresting when jam occurred. It was running smooth until that jam on the benchrest. I'm going to go back and shoot it some more to isolate the problem but since 9mm isnt that cheap or available currently, not in any great rush!
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Old 03-13-2013, 04:37   #25
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Thanks kirbinster that makes sense. Best to have the mags designed for the round than to assume as I did. Especially for carrying. Will get you thru some range use.
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The mags are not the same. Yes you can fit 9mm in the .40 cal mag but it may not be reliable. You cannot fit .40 cal in the 9mm mag.
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