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Old 09-06-2012, 05:30 AM   #1
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Default Dotted Pentagon on Glock Barrel

Hey y'all

My Glock 17 Gen 4 was manufactured in November of 2011.

My 9mm barrel has a dotted pentagon. Not just a pentagon, a dotted pentagon.

I am wondering as to why it is on there. So far I have read up on German/Austrian law. Is it because of the grade of steel?



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Old 09-06-2012, 05:50 AM   #2
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I've heard that it means that that particular barrel has polygonal rifling but that's just speculation from a few sources I could be wrong I've also heard people say its a Austrian proof mark



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Old 09-08-2012, 10:58 PM   #3
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It all seems up to conjecture at this point. Who would like to call Glock and ask them Monday morning? Get it straight from the manufacturer instead of opinions off the internet. Whatdya say?

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Old 09-12-2012, 03:49 AM   #4
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Quote:
Originally Posted by Ram Rod View Post
It all seems up to conjecture at this point. Who would like to call Glock and ask them Monday morning? Get it straight from the manufacturer instead of opinions off the internet. Whatdya say?
Smartest thing I've heard all week!!
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