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Glock 48 9mm and Glock 21 45 apc
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Discussion Starter · #1 · (Edited)
Hi new here and I came across a Old Post from 2016 talking about the Glock 21s with the stamp 4340 you need to change some parts ASAP so just wondering what parts I need to change or if anybody got some more info on the Glock 21 that stamps 4340 had a spring break on me just wondering if I should replace the spring $6 or get a whole trigger but I read changing the whole trigger requires some tuning to it
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Glock 48 9mm and Glock 21 45 apc
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6 Posts
Discussion Starter · #3 ·
I found a spring replacement with three different springs it's wolf something I forget for like 12 bucks that's why I was wondering if anybody had some info on it should I replace the whole trigger it's like 150 to 300 or just replace the springs cause like it shows on the picture I did break a spring and that spring from Glock is only $6 but I don't know if I should replace any other thing on the lower it was only 400 purchased but I plan on keeping it so would like to upgrade the weak points
 

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Glock 48 9mm and Glock 21 45 apc
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6 Posts
Discussion Starter · #5 · (Edited)
Thank you like I said I just want to replace the weak points because I plan on keeping it but I will look this over and email them asking
yes that's the post I was referring to but I wasn't sure about anything else on the lower or upper I need to replace because I heard going aftermarket is bad and stick with the original OEM parts
thank you
 

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Glock 48 9mm and Glock 21 45 apc
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6 Posts
Discussion Starter · #7 ·
Because a spring did break if you look at the 2nd picture and I know it's old because it's a second gen and I really don't know that much history about it so before I just buy that $6 spring just wondering if there was anything else to look out for because the original Post in 2016 since I'm new on here seeing if anybody else had any problems with it
that was it just a question..
But thanks for your answer like #4 said I'll just email Glock about it regarding the 4340 see what else they would recommend and get that spring through them
 
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