8ace
Modelgun Perfectionist
Number of posts : 2559
Location / Country : UK
Registration date : 2008-08-06
 | Subject: AR15 bolt vent holes  Thu Jul 16, 2020 7:59 pm | |
| Everyday is a school day. While trawling through YouTube I found out what the holes are on the AR15 bolt carrier as modeled on the modelgun parts https://youtu.be/xPwTGfhUulk | |
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JohnnyV
Modelgun Perfectionist
Number of posts : 552
Location / Country : Cambridgeshire UK
Registration date : 2009-08-24
| | Subject: Re: AR15 bolt vent holes Thu Jul 16, 2020 11:03 pm | |
| Very nice !! never knew that! | |
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ljerr2
Modelgun Perfectionist
Number of posts : 571
Location / Country : Iowa, USA
Registration date : 2008-11-26
| | Subject: Re: AR15 bolt vent holes Fri Jul 17, 2020 1:40 am | |
| .......and I thought you knew everything!  Yes, those holes are designed to vent the gas. As the bullet is fired and passes through the barrel, some of the gas is directed through the vent hole in the barrel and into the gas block and down the gas tube through the gas key on the bolt carrier. This is what causes the blowback of the bolt carrier group.  | |
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JohnnyV
Modelgun Perfectionist
Number of posts : 552
Location / Country : Cambridgeshire UK
Registration date : 2009-08-24
| | Subject: Re: AR15 bolt vent holes Fri Jul 17, 2020 11:00 am | |
| LOL Yea know all of that but just did not think how the now used gas was released from bolt during travel, obvious now after seeing it !! | |
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smootik
Modelgun Perfectionist
Number of posts : 1823
Location / Country : Poland
Registration date : 2009-03-03
| | Subject: Re: AR15 bolt vent holes Fri Jul 17, 2020 5:05 pm | |
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claymore
Modelgun Perfectionist
Number of posts : 1246
Age : 64
Location / Country : London
Registration date : 2008-09-07
| | Subject: Re: AR15 bolt vent holes Tue Jul 21, 2020 10:15 am | |
| Never knew that! never gave those holes a thought to be honest just assumed it had to do with weight. | |
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8ace
Modelgun Perfectionist
Number of posts : 2559
Location / Country : UK
Registration date : 2008-08-06
| | Subject: Re: AR15 bolt vent holes Sun Jan 24, 2021 8:54 am | |
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MadMike
Modelgun Perfectionist
Number of posts : 653
Location / Country : Germany (Stuttgart)
Registration date : 2008-08-06
| | Subject: Re: AR15 bolt vent holes Thu Oct 14, 2021 1:53 pm | |
| I had missed this thread. Thank you very much, very interesting. | |
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| | Subject: Re: AR15 bolt vent holes | |
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