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Posted: 4/19/2016 3:38:46 PM EDT
[#1]
are you using froglube?
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Posted: 4/19/2016 3:39:44 PM EDT
[#2]
Does it go in with a tap on the forward assist? If so, I'd say that either the buffer spring is a little weak. If not, your chamber may be a little tight.
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Posted: 4/19/2016 3:56:57 PM EDT
[#3]
Quote HistoryQuoted: are you using froglube? Quote HistoryQuoted: are you using froglube? Quoted: Does it go in with a tap on the forward assist? If so, I'd say that either the buffer spring is a little weak. If not, your chamber may be a little tight. |
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Posted: 4/19/2016 5:24:26 PM EDT
[#4]
What did the brass look like on the ones you manually ejected?
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Posted: 4/19/2016 6:11:03 PM EDT
[#5]
I'm guessing it's getting caught on the edge of the ejector, and not pushing it in and letting the extractor snap over the rim.
ETA: Judged by the pic. That's odd if it's just now doing this with this particular ammo. |
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Posted: 4/19/2016 6:43:35 PM EDT
[#6]
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Posted: 4/19/2016 7:10:46 PM EDT
[#7]
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Posted: 4/19/2016 7:23:31 PM EDT
[#8]
A pic of the bolt face would be helpful. I'm betting the extractor is the problem. Could have gotten tweeked and is too far causing the case to hit the face of the extractor instead of the inside bevel preventing it from snapping over the rim. This in turn cocks the cartridge slightly when feeding and the whole thing comes to a halt.
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Posted: 4/19/2016 7:40:15 PM EDT
[#9]
Here is one where it hung up like the original photo, after a period of time it decided to complete the chambering process.
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Posted: 4/19/2016 9:46:07 PM EDT
[#10]
I'm the worst at stuff like this but mine had the exact same problem as yours. Pics were identical. I tried all suggestions given here and the problem end up being the BCG.
I changed the bolt & carrier and the problem went away immediately. It has never returned so I don't know which part of the assembly was causing the problem. I still have the old one, not sure what to do with it. |
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Posted: 4/20/2016 12:02:43 AM EDT
[#11]
Quote HistoryQuoted: A pic of the bolt face would be helpful. I'm betting the extractor is the problem. Could have gotten tweeked and is too far causing the case to hit the face of the extractor instead of the inside bevel preventing it from snapping over the rim. This in turn cocks the cartridge slightly when feeding and the whole thing comes to a halt. |
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Posted: 4/20/2016 12:10:30 AM EDT
[#12]
Could be:
* Extractor spring too strong * Action spring too weak Combination of both. Round count? Pull your bolt apart and see if there is an extra power spring or O ring. Measure your action spring length. |
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Posted: 4/20/2016 1:33:20 AM EDT
[#13]
Based on it working fine for years and those vids, I'm guessing action spring. If you don't have a new spring, do you have another lower to try that upper on?
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Posted: 4/20/2016 6:36:06 AM EDT
[#14]
Action does seem slow, grab a new spring for less than $3, or at the very least make sure it's around 10.5" or higher(for carbine). I'd too like to see the bolt face as I may believe it's a combination of weak buffer spring and/or extractor issues.
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Posted: 4/20/2016 8:45:04 AM EDT
[#15]
It stopping at the same place each time there has to be something stopping it. Look for a roll pin backing out of your buffer or maybe the buffer detent. Maybe a cam pin issue. Given where it is stopping also check there is no damage to the gas key or gas tube; look like that might be hanging you as those interface. Take it apart and look for wear or damage on those any any other moving parts.
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Posted: 4/20/2016 6:49:18 PM EDT
[#16]
Quote HistoryQuoted: Here is one where it hung up like the original photo, after a period of time it decided to complete the chambering process.  https://www.youtube.com/watch?v=kCBsVdtilP0 |
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Posted: 4/20/2016 7:01:44 PM EDT
[#17]
If you have another newer AR start swapping parts one at a time until you find the culprit. If you dont have another AR, then this is your excuse to buy one.
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