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February 20th, 2017, 06:50 PM #1
AR weird problem - sheared extractor pin
Odd. So took the AR out today and jam after jam after jam: spent shell just stayed in, not even stovepiping. About 50/50 jam vs. cycled properly. Did about 30 and gave up.
Took her home and disassembled and when I pulled apart the bolt assembly the cause was clear: my ejector retaining pin (#3 below) was split - came out in three pieces. it had sheared off right on both sides, about where it goes through the inner side of the outer tube into the ejector. The ejector itself had tons of play, thus. Probably lucky something worse didn't happen.
ejector.jpg
So okay, gotta head to the LGS and get another one (or order it online for $0.95 + way more in shipping)...
But my real question is why? Any thoughts on what could have caused that? I don't think it's under-lubrication (I run pretty wet)... Just wondering if anyone else has had this and could speculate on why. The only "difference" I can think of is that I tried running some steel-case ammo through it for the first time. Or is it just "stuff happens"... Gun has maybe 1,000 max rounds through it, everything else looks good.DGAF
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February 20th, 2017, 06:59 PM #2
Re: AR weird problem - sheared extractor pin
Good catch on zeroing in on the issue quickly... and s/b easily corrected. I wonder if the pin failed due to poor quality standards with 'that' part. I've not experienced that problem, but will watch this thread with interest.
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February 20th, 2017, 07:05 PM #3
Re: AR weird problem - sheared extractor pin
Well thanks, but a little hard to miss it when I pushed the pin out and the three little 'bits' went came out!
It's an Anderson, which typically gets decent reviews on QA so far as I've seen... Could just be one little flaw/bubble in that pin and it hit its 'service life'. Until/unless something else happens, I'm chalking it up to 's**t happens'.DGAF
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February 20th, 2017, 08:01 PM #4
Re: AR weird problem - sheared extractor pin
My guess is the pin was either too soft or too hard. Keep extras on hand. All of my ARs have hollow grips with a plug for storage. I usually keep and oil bottle or a wrench in it but I guess I should put a cam pin, extractor pin, ejector pin and a could others in each grip as well.
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February 20th, 2017, 08:04 PM #5
Re: AR weird problem - sheared extractor pin
Probably caused by poor part quality or bad luck, or both.
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February 20th, 2017, 08:35 PM #6Active Member
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Re: AR weird problem - sheared extractor pin
Part #3 is the extractor retaining pin. Something doesn't add up... I'll play though. If #3 did break I'd say post a pick of the brass.
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February 20th, 2017, 08:46 PM #7Banned
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Re: AR weird problem - sheared extractor pin
Order a few of them if they are cheap
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February 20th, 2017, 08:50 PM #8
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February 20th, 2017, 08:51 PM #9
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February 20th, 2017, 08:52 PM #10
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