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Posted: 2/11/2010 11:57:47 AM EDT
| hi, wondering if i`m doing something wrong or because i bought a $49 collapsible stock. has anyone ever had trouble with the buffer tube being installed and having it not being straight? installed one some time ago and the bolt carrier would not go back into the tube( it was very tight when charging). when i looked at it, you could see tube was not completely straight. seemed to be a lot of play in the threading after it was positioned over the spring detent. did i just get too cheap of a stock? thanks! |
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Quoted:
I'm kinda new here, but what comes to mind is the difference in commerical and milspec tubes. Did you maybe have a commerical lower and bought a milspec buffer tube, or vice versa? That won't matter. The difference between the two is in the diameter of the tube not in the threads. |
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Quoted:
Quoted:
I'm kinda new here, but what comes to mind is the difference in commerical and milspec tubes. Did you maybe have a commerical lower and bought a milspec buffer tube, or vice versa? That won't matter. The difference between the two is in the diameter of the tube not in the threads. Correct. |
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Quoted:
hi, wondering if i`m doing something wrong or because i bought a $49 collapsible stock. has anyone ever had trouble with the buffer tube being installed and having it not being straight? installed one some time ago and the bolt carrier would not go back into the tube( it was very tight when charging). when i looked at it, you could see tube was not completely straight. seemed to be a lot of play in the threading after it was positioned over the spring detent. did i just get too cheap of a stock? thanks! Not enough info. What brand AR, and what brand stock? Some AR manufacturers such as DPMS and Bushmaster (I'm not a basher, I own one each) do not use mil-spec buffer tubes, which requires a kit from a manufacturer (VLTOR, etc.) for a mil-spec adaptation to a stock. At the price of a $49 stock, you may have faced this problem, or cross-threaded during installation. Please provide more info. Thanks, Ed |
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Quoted:
Quoted:
I'm kinda new here, but what comes to mind is the difference in commerical and milspec tubes. Did you maybe have a commerical lower and bought a milspec buffer tube, or vice versa? That won't matter. The difference between the two is in the diameter of the tube not in the threads. Really, well damn it. I bought a DPMS lower and it said it was a commercial lower. To me that meant I had to use a commercial buffer tube. It doesn't matter at this point because VLTOR makes the EMOD for that size as well. And also, I found this before I bought the buffertube, so is this picture wrong or what? And if the threads are the same, why did they make two different sizes when it's almost indistinguishable? http://www.laruetactical.com/pics/BufferTube/CTR_Stock_Specs.jpg |
That small difference equals out to a lot of play in the butt stock. Even with the friction lock engaged on a CTR the play is still there. That's why they have two sizes. Who the genius was that originally came out with two dif sizes I don't know. But I would love to give him a swift kick in the ass. 
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Quoted: Quoted: Quoted: I'm kinda new here, but what comes to mind is the difference in commerical and milspec tubes. Did you maybe have a commerical lower and bought a milspec buffer tube, or vice versa? That won't matter. The difference between the two is in the diameter of the tube not in the threads. Really, well damn it. I bought a DPMS lower and it said it was a commercial lower. To me that meant I had to use a commercial buffer tube. It doesn't matter at this point because VLTOR makes the EMOD for that size as well. And also, I found this before I bought the buffertube, so is this picture wrong or what? And if the threads are the same, why did they make two different sizes when it's almost indistinguishable? http://www.laruetactical.com/pics/BufferTube/CTR_Stock_Specs.jpg Any lower should accept either size buffer tube. When you loosen the castle nut and lock plate on the tube is it very easy to thread out the tube by hand? If not then it's probably cross-threaded. If it is easy to thread out and it's still in crooked then you may have an out-of-spec lower. Edit: Re-read the first post and OP said it had a lot of play in the threads. I assume that means the tube can wobble, which probably means the castle nut is not torqued enough. |
| thanks guys! that helped a lot! did not know about the 2 diff. sizes before. that explains it all. the threads are loose when screwing it in my bushmaster, hence the off kilter tube when its tightened up. ditto to the swift kick in the ass. i wish they would all say when selling them whether they are mil. or comm. BTW, i used a friends car. assm. in the same lower and it was a firm fit( no slop). i think the JUNK i bought from CDNN IS JUST THAT, JUNK!!! my bad, you learn from your mistakes. |
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i had similar trouble once, but that lower had trouble with a mil-spec stock, lol the bolt wouldnt get into the tub when charging.... it turned out because the tub was not turned in far enough to push the buffer retainer low enough which blocked the bolt... but couldnt make one more turn.... and the $49 junk worked perfectly on that lower, so save the mil-spec for another lower, lol
BTW, i can tell the mil-spec one is a lot better than the $49 junk in term or quality. |
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