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Discussion Starter #1
Just got the below items for my G22 Gen4. Can I use the stock recoil spring with no problems or do I need a G17 spring?


Yes, its a 9mm conversion barrel.
 

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Very interesting. I'm not really sure. The .40 spring may be stiffer but I don't know. The only thing I can suggest is getting on a Glock parts site and see if the springs for both guns are listed under the same part #.
 

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kirbinster said:
Just got the below items for my G22 Gen4. Can I use the stock recoil spring with no problems or do I need a G17 spring?

Yes, its a 9mm conversion barrel.
I have a Gen 3 G35 which I bought a LWD 9mm conversion barrel and I use the factory recoil spring. I think they say on Lone Wolfs web site it tells you that you might have to change the recoil spring, check there first.
 

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Discussion Starter #4
I'm sort of confused because on some web sites they show the exact same part number for the Gen4 G17 and G22 spring while other ones have different ones listed. Guess I will just try it and see how it works.
 

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Discussion Starter #5
I recently got a KKM conversion barrel and 9mm mag for my G22 gen4. I have never had any failures with .40cal but had lots of eject and feed issues. Part of it was probably the crappy 115gr ammo at the range, but I think there is another issue. While many claim you don't need to change the recoil spring I think you do in a gen4 gun. Glock seems to think so too. I just spoke with tech support and they told me the g17 spring and the g22 springs are different. The G22 is part number FP07577 while the G17 is FP08284. I think the G22 spring is stiffer and the light 9mm ammo does not have enough energy to fully work the slide with the stiffer spring.
 

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That makes sense. I was just reading today that when the gen4 17's first came out there were problems with the recoil spring being too stiff and they had to make a change.
 

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No, you don't need a different spring. For any non ported barrel, which you have, the stock spring will work just fine. Regardless of any conversions. This is from my own experience
 

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Discussion Starter #8
No, you don't need a different spring. For any non ported barrel, which you have, the stock spring will work just fine. Regardless of any conversions. This is from my own experience
Well I am happy that is YOUR experience, but mine is different and Glock says a different spring is needed.
 

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My experience is with a gen 3 g22. The spring is 17 pounds for both a 9mm g17 and 40 g22. So for a gen 4 your results may obviously vary
 

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Since we're on the subject of recoil springs, how often are you guys changing them out? I got 1600 rounds out of mine before my g22 started failure to feed problems and kicking spent brass backwards in my face. About 1 round per mag. I'm using ismi springs on a steel rod. Anyone else having this problem? I was told those springs should last 5000 rounds. Not just 1600.
 

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Discussion Starter #12
Since we're on the subject of recoil springs, how often are you guys changing them out? I got 1600 rounds out of mine before my g22 started failure to feed problems and kicking spent brass backwards in my face. About 1 round per mag. I'm using ismi springs on a steel rod. Anyone else having this problem? I was told those springs should last 5000 rounds. Not just 1600.
An interesting question. Just today someone mentioned to me that on a Kimber 1911 it is suggested to change the spring every 1300-1600 rounds.
 

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Since we're on the subject of recoil springs, how often are you guys changing them out? I got 1600 rounds out of mine before my g22 started failure to feed problems and kicking spent brass backwards in my face. About 1 round per mag. I'm using ismi springs on a steel rod. Anyone else having this problem? I was told those springs should last 5000 rounds. Not just 1600.
Is it a gen 4? Google glock brass to face. And then call glock and have them send you a new recoil spring.
 

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It's a gen 3 I bought new last July. Tried a gen 4 my friend has and I liked the 3 better. I ditched the stock rod and spring after the first 100 rounds for a steal rod and aftermarket ismi spring. When I installed the new spring a few weeks ago I could immediately tell a huge difference when racking the slide. Didn't feel like a sponge anymore. Haven't had the time or ammo to get to the range yet but I think the 40sw just beats the [email protected] out of springs in general. It may be safe to say that changing a 6$ part every 1300 to 1500 rounds is cheap insurance.
 

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Discussion Starter #16
Well I got a G17 spring and tried it today with the 9mm KKM conversion barrel and it worked great. Put 50 rounds of 115 grain 9mm rounds down the barrel and not a single failure of any type.
 

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Great. I'm glad you got it sorted out. Thanks for the update Ive been thinking about looking into the 9mm conversion myself.
Most of my semi autos are in .40 and I don't own a 9mm at this time. With the ammo situation these days it's probably wise to as flexible as possible.
 

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That makes sense. I was just reading today that when the gen4 17's first came out there were problems with the recoil spring being too stiff and they had to make a change.
That's exactly the difference..! The early gen. 4,s had the double recoil spring like in the sub. compacts and then , went back to the single spring up-grade so's two No.s but you want the single spring G-17..!

kirbinster , way to go Bra..!
 

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Definitely seems to be the case. My spring was a sponge. From now on I'll just change it every 1300 to be safe and sound
I don't see the need to change the sprang every 1300 rounds or so.!
Actually , I would not change anything until issues become "chronic".
Some springs last indefinably , 25,000 rds. and beyond. I won't do anything until a problem presents itself . I would however have a nice collect of complete replacements for all things prone to wear and tear.!
"If it ain't broke , don't fix it"..! OMHO....!:)
 

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dango said:
I don't see the need to change the sprang every 1300 rounds or so.!
Actually , I would not change anything until issues become "chronic".
Some springs last indefinably , 25,000 rds. and beyond. I won't do anything until a problem presents itself . I would however have a nice collect of complete replacements for all things prone to wear and tear.!
"If it ain't broke , don't fix it"..! OMHO....!:)
Sound advice. I recently ordered replacement springs for all my Glocks. May never need them but if I do they are ready.
 
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