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 Post subject: Fail to extract
New postPosted: August 3rd, 2015, 10:19 am 
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I purchased an AR awhile back and just got around to shooting it. It jammed every shot, which required me to knock the spent casing out of the rifle each time.
There is a noticeable ridge on the spent casing after extraction.


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 Post subject: Re: Fail to extract
New postPosted: August 3rd, 2015, 11:22 am 
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First things first.
Clean it.
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Change ammo.
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 Post subject: Re: Fail to extract
New postPosted: August 3rd, 2015, 11:37 am 
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Failure to extract is a fairly common problem.
SOP is to get an extractor upgrade kit. Dirt cheap, easy to install, can't hurt, and often helps.
http://www.brownells.com/rifle-parts/extractor-parts/extractors/ar-15-m16-extractor-upgrade-kit-prod24635.aspx

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 Post subject: Re: Fail to extract
New postPosted: August 3rd, 2015, 11:54 am 
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Looks good to me. I might get one and I don't even have issues.


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 Post subject: Re: Fail to extract
New postPosted: August 3rd, 2015, 5:38 pm 
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Is it chambered in 545 x 39 by chance?

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 Post subject: Re: Fail to extract
New postPosted: August 8th, 2015, 5:51 pm 
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Looks like a bad chamber to me.

I'd consider changing barrels.

D.

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 Post subject: Re: Fail to extract
New postPosted: August 9th, 2015, 5:32 am 
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Good post on the worn barrel, chamber erosion? Have a lot of rounds been down the barrel?.. It sure looks like the case has been pushed further into the chamber????...,but it makes you wonder if this is even possible??.. If so, makes you wonder ?... Is there room for the for the extractor to even engage the spent shell?. Last question, new or reloaded ammo?....I've had a few of my reloads that wouldn't extract but it was that my small base sizing die wasn't set deep enough, although the round would pass in the case gauge...


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 Post subject: Re: Fail to extract
New postPosted: August 9th, 2015, 9:14 am 
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AZEX wrote:
Looks like a bad chamber to me.

I'd consider changing barrels.

D.


This.. Looks like the chamber was cut wrong/bad reamer..

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 Post subject: Re: Fail to extract
New postPosted: August 9th, 2015, 11:32 am 
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azgunlover69 wrote:
Is it chambered in 545 x 39 by chance?


I would check that out first.

The ring seems to be right about where a 5.56 would hit in a 545x39 gun. Forward assist or HEAVY spring might close bolt enough to fire in partial battery.

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 Post subject: Re: Fail to extract
New postPosted: August 9th, 2015, 12:03 pm 
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Improperly reamed...has a ridge. If that barrel was sold I wonder how the hell they test fired the weapon before boxing and shipping?

D.

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 Post subject: Re: Fail to extract
New postPosted: August 10th, 2015, 5:57 am 
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YUP!!!, bad ju-ju in that chamber,... either bad reaming or wrong caliber stamped on the barrel, hard to tell from a pic.

Is this an AR BUILD,... are you shooting reloads?
There are a lot of avenues to consider.

I wouldn't shoot that again, until I figured it all out.

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 Post subject: Re: Fail to extract
New postPosted: August 10th, 2015, 11:35 pm 
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Can't tell by the picture but you might be able to take a good reamer and give it a couple quick light turns to remove enough of that ring to make it work.

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 Post subject: Re: Fail to extract
New postPosted: August 11th, 2015, 5:11 am 
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Makes me wonder if it was even test fired in the first place. Otherwise it should not have left the factory. Further reaming may not resolve the issue. Best to have a competent gunsmith take a look at it first before proceeding any further. And be sure to take some of the extracted cases with you for the 'smith to look at.


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 Post subject: Re: Fail to extract
New postPosted: August 11th, 2015, 5:15 am 
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milquetoast wrote:
Failure to extract is a fairly common problem.
SOP is to get an extractor upgrade kit. Dirt cheap, easy to install, can't hurt, and often helps.
http://www.brownells.com/rifle-parts/extractor-parts/extractors/ar-15-m16-extractor-upgrade-kit-prod24635.aspx

Snake oil IMO. Can't tell you how many thousands of rounds I've run through and AR and have yet to install an extractor upgrade kit.


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 Post subject: Re: Fail to extract
New postPosted: August 11th, 2015, 5:38 am 
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Any results, resolution?

It would be interesting to learn the actual diagnosis and repair.

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