Ar15 short stroke? - DFWstangs Forums
 
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post #1 of 12 (permalink) Old 09-18-2010, 06:34 PM Thread Starter
Lifer
 
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Ar15 short stroke?

Just took my new riffle out to the range for the first time the first 40 rounds went great.But then the bolt stopped cycling the fired round would not eject I can work the bolt manually it would eject the round and load the next then fire fine but not cycle. What could cause this? Gas system
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post #2 of 12 (permalink) Old 09-18-2010, 06:39 PM
Factory Issue
 
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Was it brand new? The gas key could've been a little loose, and gotten knocked very slightly out of alignment with the gas tube.

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post #3 of 12 (permalink) Old 09-18-2010, 06:46 PM Thread Starter
Lifer
 
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Brand new. How do I fix this I am new to the ar world. Thanks
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post #4 of 12 (permalink) Old 09-18-2010, 06:51 PM
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Does it atleast try and move the bolt some? Is there alot of carbon around the front sight area? Carrier key tight/no cracks. Basically start at one end of the gas system and work your way to the other.

Should be a simple fix once you find it.

What you might call solitude is something i look forward to.
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post #5 of 12 (permalink) Old 09-18-2010, 07:51 PM Thread Starter
Lifer
 
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The bolt moves some but not far. How do I check the gas system?
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post #6 of 12 (permalink) Old 09-18-2010, 08:02 PM
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Air.

What you might call solitude is something i look forward to.
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post #7 of 12 (permalink) Old 09-18-2010, 09:10 PM
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Quote:
Originally Posted by sleeperLS View Post
Air.
Or he could tap the roll pin that holds the gas tube on, out. Pull the gas tube off the gun and check for cracks. Then run a pipe cleaner down into the gas port to the barrel. Reassemble.

2006 Mustang GT
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post #8 of 12 (permalink) Old 09-18-2010, 09:46 PM Thread Starter
Lifer
 
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I looks like when the gas block was put on the two allen heads that hold it in place were loose. It was about an inch foward of were it should have been. I could see carbon were it had been coming out between it and the barrel I just reinstalled it and put it back on. Good and snug. Now I just have to find time to get back to the range and test it.
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post #9 of 12 (permalink) Old 09-18-2010, 09:47 PM Thread Starter
Lifer
 
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Thanks for the help I will update after I test.
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post #10 of 12 (permalink) Old 09-18-2010, 09:49 PM
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First, check the gas rings on the bolt and make sure they are not aligned. I would buy a one piece Mcfarland gas ring, its only $4. Then make make sure the bolt is well lubed.
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post #11 of 12 (permalink) Old 09-18-2010, 09:51 PM
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Quote:
Originally Posted by silverhatch View Post
I looks like when the gas block was put on the two allen heads that hold it in place were loose. It was about an inch foward of were it should have been. I could see carbon were it had been coming out between it and the barrel I just reinstalled it and put it back on. Good and snug. Now I just have to find time to get back to the range and test it.

Put locktite on them allen heads.
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post #12 of 12 (permalink) Old 09-19-2010, 03:20 AM
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Quote:
Originally Posted by 5.0LiterRiceEater View Post
First, check the gas rings on the bolt and make sure they are not aligned. I would buy a one piece Mcfarland gas ring, its only $4. Then make make sure the bolt is well lubed.

$1.25 @Armalite.com
http://www.armalite.com/ItemForm.aspx?item=EB0121

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