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Old 01-12-2014, 12:14 PM   #1
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Default Storm Lake 21 to 10MM Conversion

Been looking at one for awhile but, different sources online claim different things. Some say you need a extractor change and spring change, some say only one or the other. Other places say just swap the barrel. So does anyone have one?



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Old 01-13-2014, 11:21 PM   #2
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What Gen Glock to you have? I emailed glockmeister and asked them what would be needed for my Gen 4. They said just barrel and mags.



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Old 01-13-2014, 11:38 PM   #3
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A glock 21 is a 40 cal ant it?

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Old 01-14-2014, 12:03 AM   #4
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I have a Gen 4 21. 21 is 45 ACP. Thanks

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Old 01-14-2014, 01:57 AM   #5
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I never got into flocks so I don't know what is what but I used to work at storm lake barrels as a machinist

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Old 01-14-2014, 02:00 AM   #6
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But for what ur asking u can just switch out barrels its no different then getting a 9mm conversion barrel for a 40 cal

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Old 01-14-2014, 03:38 AM   #7
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That's a new conversion to me. I am not sure how the .45 extractor/ejector will perform w/ 10mm

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Old 01-14-2014, 03:48 AM   #8
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A .45 has a bigger breech face. Not sure how well it would work without a whole top end.

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Old 01-14-2014, 03:50 AM   #9
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The difference between .40 and 9mm is quite small compared to the difference betwen .45 and 10mm/.40

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Old 01-14-2014, 11:30 AM   #10
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It will be sloppy but it will still perform

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