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Posted: 1/31/2015 8:28:38 PM EDT
What is the main difference between the sights for the G17 frame and the G21 frame guns? Is it the dovetail or height or both?
Link Posted: 1/31/2015 8:55:42 PM EDT
[#1]
Height Only

GLOCK rear sights are available in four heights. The standard rear sight height for GLOCK pistols in 9x19, .40, .45 G.A.P., .357 and .380 calibers is 6.5mm (0.256in.); .45 and 10mm AUTO calibers 6.9mm (0.27in.).
Link Posted: 1/31/2015 9:35:26 PM EDT
[#2]
Thanks, damn. My G38 rear dovetail is a tad big.
Link Posted: 1/31/2015 10:26:34 PM EDT
[#3]
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Quoted:Thanks, damn. My G38 rear dovetail is a tad big.
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Maybe not!  Sometimes installing and uninstalling the same NS rear will compress the base to the point where that particular rear sight becomes too loose.  Purple (#222) Loctite should fix it.  
Link Posted: 1/31/2015 10:38:48 PM EDT
[#4]
thanks
Link Posted: 2/1/2015 12:39:47 AM EDT
[#5]
You can also peen the dovetails with a center punch to create some raised ridges to tighten the fit.  Peen the sides, not the bottom.
Link Posted: 2/1/2015 8:13:24 AM EDT
[#6]
Or I can just suck it up and buy a NIB rear sight. So much for saving a buck.
Link Posted: 2/1/2015 5:46:01 PM EDT
[#7]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Or I can just suck it up and buy a NIB rear sight. So much for saving a buck.
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Followed your advice, used the vice to press the ends and now the sides again, worked great.
Link Posted: 2/1/2015 8:39:51 PM EDT
[#8]
The Dovetail is the same size no matter what model Glock you have , the height is the only thing that changes
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