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Posted: 8/26/2014 4:46:08 PM EDT
I just pic up this AR yesterday went by the range shot 20 rounds shot great. Last round the bolt stuck open. I did break it down till I got home and found.The buffer tube spring jump out and there was this little broke spring looks like it holds the buffer spring. Any ideas E3 omega lower.
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Posted: 8/26/2014 4:52:31 PM EDT
[#1]
 you are going to need a buffer retainer spring and a buffer retainer. Put the spring in first, then the retainer in the hole. Push it in and twist the buffer tube clockwise till it holds in the retainer but doesn't bind it. Lock the castle nut down and stake it. insert your buffer spring and buffer. |
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Posted: 8/26/2014 4:52:36 PM EDT
[#2]
From the pic it looks like the buffer tube wasn't threaded in quite far enough. Get yourself a new buffer retainer and spring, then see if the buffer tube will thread in one more turn. From the look of it the tube was barely holding the reatainer and it was able to find it's way out.
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Posted: 8/26/2014 5:16:17 PM EDT
[#3]
You'll need a telestock/castle nut wrench, because that receiver extension needs to be threaded in one more turn in order to properly retain the new buffer retainer and buffer retainer spring you'll be installing. If you don't have the tools or aren't comfortable doing it, probably best to buy the parts at a local gun shop and maybe they'll install them for you for free.
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Posted: 8/26/2014 6:09:17 PM EDT
[#4]
Ditto, receiver extension was not threaded into the receiver far enough to correctly retain the buffer retaining pin. The front edge of the tube should be on top of the buffer retainer main outer section, with the middle center pin of the retainer almost kissing the center pin.
To add, in some cases, the front bottom edge of the tube may need to be faced back to allow the tube to be spun in another wind into the receiver to allow the butt stock to index correctly, while at the same time the end of the tube almost kissing the center pin (or in your case, the middle post of the pin within the U slot of the bottom of tube). 
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Posted: 8/26/2014 6:44:50 PM EDT
[#5]
Quote HistoryQuoted:
Ditto, receiver extension was not threaded into the receiver far enough to correctly retain the buffer retaining pin. The front edge of the tube should be on top of the buffer retainer main outer section, with the middle center pin of the retainer almost kissing the center pin. To add, in some cases, the front bottom edge of the tube may need to be faced back to allow the tube to be spun in another wind into the receiver to allow the butt stock to index correctly, while at the same time the end of the tube almost kissing the center pin (or in your case, the middle post of the pin within the U slot of the bottom of tube). http://stickman.rainierarms.com/galleries/WeaponEvolution.com/IMG_4734%201028%20WEVO%20Stick.jpg Dano, if you zoom in on his picture, do you see a good sized chunk of his extension missing where it kisses the retaining pin? I have it zoomed all the way in, it looks like hes going to need a new extension. |
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Posted: 8/26/2014 7:11:56 PM EDT
[#6]
Thanks for the info I posted it on a local AR face book page also.I have a guy going to fix it in the morning he said he has all the tools and parts. I am learning more and more about the AR.
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Posted: 8/26/2014 7:21:41 PM EDT
[#7]
I have the same lower and had the same problem. The solution is getting the castle nut tightened sufficiently.
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Posted: 8/26/2014 9:07:03 PM EDT
[#8]
Quote HistoryQuoted:
Dano, if you zoom in on his picture, do you see a good sized chunk of his extension missing where it kisses the retaining pin? I have it zoomed all the way in, it looks like hes going to need a new extension. No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. |
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Posted: 8/26/2014 9:12:06 PM EDT
[#9]
Quote HistoryQuoted:
No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. Quote HistoryQuoted:
Quoted:
Dano, if you zoom in on his picture, do you see a good sized chunk of his extension missing where it kisses the retaining pin? I have it zoomed all the way in, it looks like hes going to need a new extension. No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. Oh alright, this is the first ive ever seen one like that. I was wondering how the pressure from that little spring could take a chunk out |
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Posted: 8/26/2014 9:25:34 PM EDT
[#10]
Quote HistoryQuoted:
No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. Quote HistoryQuoted:
Quoted:
Dano, if you zoom in on his picture, do you see a good sized chunk of his extension missing where it kisses the retaining pin? I have it zoomed all the way in, it looks like hes going to need a new extension. No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. Ditto (as always with Circuits), since it does allow for the end of the tube edge to go slightly past the center post of the retainer (read so you don't have to face the end of the tube if it slightly too long). In the below photo, without the U slot, chances are the face of the bottom of the tube would need to be slightly faced to allow the correct butt stock index/buffer retainer pin retainage. 
Also to point out, this is how the OP's receiver extension should have been indexed/threaded in/isntalled, and if you look at his photo and the top of his tube to front face of the threaded receiver section, you can see it recessed way back in the receiver threads. Meaning that he could have spun the tube in at least one, if not two more winds into the receiver to correctly retain the buffer retainer. |
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Posted: 8/26/2014 9:41:16 PM EDT
[#11]
Quote HistoryQuoted:
Ditto (as always with Circuits), since it does allow for the end of the tube edge to go slightly past the center post of the retainer (read so you don't have to face the end of the tube if it slightly too long). In the below photo, without the U slot, chances are the face of the bottom of the tube would need to be slightly faced to allow the correct butt stock index/buffer retainer pin retainage. http://i24.tinypic.com/34qa34m.jpg Also to point out, this is how the OP's receiver extension should have been indexed/threaded in/isntalled, and if you look at his photo and the top of his tube to front face of the threaded receiver section, you can see it recessed way back in the receiver threads. Meaning that he could have spun the tube in at least one, if not two more winds into the receiver to correctly retain the buffer retainer. Quote HistoryQuoted:
Quoted:
Quoted:
Dano, if you zoom in on his picture, do you see a good sized chunk of his extension missing where it kisses the retaining pin? I have it zoomed all the way in, it looks like hes going to need a new extension. No, a number of receiver extensions are made that way to let them overlap the buffer retainer, with the notch to pass the post properly. Ditto (as always with Circuits), since it does allow for the end of the tube edge to go slightly past the center post of the retainer (read so you don't have to face the end of the tube if it slightly too long). In the below photo, without the U slot, chances are the face of the bottom of the tube would need to be slightly faced to allow the correct butt stock index/buffer retainer pin retainage. http://i24.tinypic.com/34qa34m.jpg Also to point out, this is how the OP's receiver extension should have been indexed/threaded in/isntalled, and if you look at his photo and the top of his tube to front face of the threaded receiver section, you can see it recessed way back in the receiver threads. Meaning that he could have spun the tube in at least one, if not two more winds into the receiver to correctly retain the buffer retainer. Makes perfect sense. Makes me wonder why they arent all made that way now. Not that theres anything wrong with the traditional extension, (ive never had one cant itself or release the retaining pin) (I think I just answered my own question as to why) haha |
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Posted: 8/27/2014 11:15:20 AM EDT
[#12]
Way, way back, when Colt was the only one making the rifles, They made sure that the receiver extensions where thread indexed with the receivers so the receiver extensions would mate up correctly (FN does the same now).
Now a days, with all the different receiver and extension manufacturers on the market to build the rifle, and the fact that there is no mil spec for the thread indexing on the receivers or extensions, it not uncommon to have to face the end of the tube to get it to butt stock index correctly and the end the tube almost kiss the lip. As for the U slot itself, still have mixed thoughts on it, since it does make the end of the tube weaker, but at the same time, for someone looking for a plug and play build (without having to do any fitting, hence 2 min rifle build), the added U slot does allow such. |
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Posted: 8/28/2014 3:35:45 PM EDT
[#13]
OK got a update I took it to one of the local AR builders, the hole is hollowed out to bad to hold the spring.Also the buffer tube is damaged. So I contacted E 3 arms owner he said this was one of the first 100 built and they have a defect in the hole so I have sent it back in and he is replacing it free of charge.
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