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H&K EXPERT 40 o-rings


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Old 04-06-2015, 02:15 PM   #1
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Default H&K EXPERT 40 o-rings

I've been thinking of going to ACE or HOME DEPOT and buying some o-rings, cause the H&K ones are too expensive
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Old 04-06-2015, 03:45 PM   #2
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thats what i do for my 22cal suppressor. just check em every couple hundred rounds. orings dont last long under heating cooling cycles. the ones you get from the hardware store are identical to oem orings. i use orings to keep thread protecters from unscrewing on my m9 and fnx45t
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Old 04-06-2015, 03:51 PM   #3
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I figured as much, didn't think there would be much of a difference between the o-rings
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Old 04-06-2015, 03:56 PM   #4
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there are high temp orings that you can order online but the cost for a few is the same as a big bag of regular ones. regular orings last a long time under normal firing a lot less if its being used with a suppressor. i typically get about 400 to 500 rounds of 22lr before the orings crap out when running suppressed.
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Old 04-06-2015, 04:18 PM   #5
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The o-rings will not be used on a suppressor, just a H&K EXPERT 40
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Old 04-06-2015, 05:18 PM   #6
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ACE told me they don't carry o-rings that thin & they think the reason the H&K o-rings are green, is because they're high heat o-rings
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Old 04-06-2015, 05:23 PM   #7
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looked up a pic they are greyish color which means high heat. from quick research on the web the oring serves no practical purpose other than a marketing gimmick which hk is well fond.

hk claims it increases accuracy.... not sure how that happens. but there ya go.

im not sure after seeing that its just around a barrel with no nothing else that its something i would rely on in a carry gun.

maybe this will help you out:

http://www.oringsizes.com/heat-resistance-grade.htm
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Old 04-06-2015, 05:35 PM   #8
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I've been told that the o-rings doesn't make the gun shoot more accurate, I live in a B I G city, i'm sure i'll be able to find an o-ring that will fit the barrel
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Old 07-25-2016, 03:41 PM   #9
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the only gun I have with O rings is an HK .45C and I'm over 500 rounds and the O ring, still looks like day one.
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Old 07-25-2016, 06:46 PM   #10
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Quote:
Originally Posted by gunman41mag View Post
I've been told that the o-rings doesn't make the gun shoot more accurate, I live in a B I G city, i'm sure i'll be able to find an o-ring that will fit the barrel
find a place that makes hoses and does work on hydraulics. they will usually have O-rings of all sizes in stock. usually pretty inexpensive as well.
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