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Posted: 8/3/2016 3:13:07 PM EDT
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I made a mistake and screwed my buffer tube too far in, now the retaining pin has it locked in place and I cannot get to the pin/spring to depress it so I can remove it. There is only an extremely tiny gap to access the pin. Any ideas on how to get it out? Or am I destined to buy a new buffer tube.
It is a M&P 15. Thanks for any help. |
| I think I'm getting it now. Your buffer retaining detent is stuck in the threads of your buffer tube? Spray some kind of lubricant in between that detent and the threads, so that it does less damage and unthreads easier. Then fit whatever you can in to push that detent down, while unthreading the receiver extension. You'll probably need to put it in a fixture and a vise so you can use both hands. Does that make sense? |
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Quoted:
I made a mistake and screwed my buffer tube too far in, now the retaining pin has it locked in place and I cannot get to the pin/spring to depress it so I can remove it. There is only an extremely tiny gap to access the pin. Any ideas on how to get it out? Or am I destined to buy a new buffer tube. It is a M&P 15. Thanks for any help. Sounds like what you've done is screw the tube in so far that the detent pin is completely under the tube. The reason you can't turn the tube back out is that the buffer detent is trapped in the shallow groove that's present for the receiver end plate to index. That groove is really shallow on most tubes, and the tube alloy is fairly soft: first thing I'd try is to just "muscle" it: chances are that the steel detent pin will cut its way out of the groove enough to back the tube out a turn, and once you've got that, you should be able to depress the detent with something. Chances are the tube will be salvageable. Good luck. 
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Quoted:
Sounds like what you've done is screw the tube in so far that the detent pin is completely under the tube. The reason you can't turn the tube back out is that the buffer detent is trapped in the shallow groove that's present for the receiver end plate to index. That groove is really shallow on most tubes, and the tube alloy is fairly soft: first thing I'd try is to just "muscle" it: chances are that the steel detent pin will cut its way out of the groove enough to back the tube out a turn, and once you've got that, you should be able to depress the detent with something. Chances are the tube will be salvageable. Good luck. Quoted:
Quoted:
I made a mistake and screwed my buffer tube too far in, now the retaining pin has it locked in place and I cannot get to the pin/spring to depress it so I can remove it. There is only an extremely tiny gap to access the pin. Any ideas on how to get it out? Or am I destined to buy a new buffer tube. It is a M&P 15. Thanks for any help. Sounds like what you've done is screw the tube in so far that the detent pin is completely under the tube. The reason you can't turn the tube back out is that the buffer detent is trapped in the shallow groove that's present for the receiver end plate to index. That groove is really shallow on most tubes, and the tube alloy is fairly soft: first thing I'd try is to just "muscle" it: chances are that the steel detent pin will cut its way out of the groove enough to back the tube out a turn, and once you've got that, you should be able to depress the detent with something. Chances are the tube will be salvageable. Good luck. Ditto, I've seen some pretty screwed up tubes that worked fine. My favorite is when someone turns the extension without pulling the endplate off of the lower. The castle nut even covers up that damage, if the lower doesn't. |
what he said..........  Quoted:
Sounds like what you've done is screw the tube in so far that the detent pin is completely under the tube. The reason you can't turn the tube back out is that the buffer detent is trapped in the shallow groove that's present for the receiver end plate to index. That groove is really shallow on most tubes, and the tube alloy is fairly soft: first thing I'd try is to just "muscle" it: chances are that the steel detent pin will cut its way out of the groove enough to back the tube out a turn, and once you've got that, you should be able to depress the detent with something. Chances are the tube will be salvageable. Good luck. Quoted:
Quoted:
I made a mistake and screwed my buffer tube too far in, now the retaining pin has it locked in place and I cannot get to the pin/spring to depress it so I can remove it. There is only an extremely tiny gap to access the pin. Any ideas on how to get it out? Or am I destined to buy a new buffer tube. It is a M&P 15. Thanks for any help. Sounds like what you've done is screw the tube in so far that the detent pin is completely under the tube. The reason you can't turn the tube back out is that the buffer detent is trapped in the shallow groove that's present for the receiver end plate to index. That groove is really shallow on most tubes, and the tube alloy is fairly soft: first thing I'd try is to just "muscle" it: chances are that the steel detent pin will cut its way out of the groove enough to back the tube out a turn, and once you've got that, you should be able to depress the detent with something. Chances are the tube will be salvageable. Good luck. |
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