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Old 12-08-2008, 06:57   #1
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gas tube troubles

I tried or half #%2 accomplished it.. while installing a new gas tube I had the roll pin holes just about lined up just off by a cat whisker then the darn thing got stuck would not budge right or left forward or back. with fear of bending it I decided to go ahead and drive the roll pin home with the hopes that the pin would pull the tube into alignment. it seemed to do the trick, the carrier key and tube line up with no impinging or any other negative contact, some slight movement of the gas tube as the it centers itself into the carrier key is normal right?

I test fired it and everything seems to be running fine. But I was beginning to second guess it so I took the roll pin out and inspected the holes everything appeared to be lined up so I drove a new pin into it but im beginning to second guess it again.

I'm thinkin I may be going nuts despite the fact everything seems fine im at the point of buying another gas tube and starting all over again. any expert advice would surely be appreciated! thanks
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Old 12-08-2008, 07:40   #2
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You are indeed going nuts. I have scheduled an appointment with the local head doctor with free room and board. Please send your rifles, ammo, optics and other tacitcals to me for safe keeping during your stay, uh, I mean visit.


Maybe tightening or loosening your barrel nut may offset the as tube contact with the carrier key? BRD is a nasty illness.
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Old 12-08-2008, 08:45   #3
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its slight upward movement, looking at the gap between the upper receiver flange and gas tube just between where the tube goes into the receiver and delta ring assembly. the gap between the flange and the gas tube with the bolt open is about 3 sheets of paper wide than with the bolt close the gap opens to about 6 sheets of paper. JC im going nuts... now that I think about it the average fool wouldnt even notice that that little bit of movement should be normal huh? I got BRD bad well aside from that id still like some expert advice or at this point opinions? thanks
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Old 12-08-2008, 15:14   #4
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Look at a friend's AR and compare movement on one that has not been altered. Or put a little nail polish on the tube inside the reciever and see how bad it's rubbing and where.
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Old 12-08-2008, 16:18   #5
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That's a great idea on the nail polish. I'll have to remember that. Thanks.
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Old 12-08-2008, 18:27   #6
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I look forward to the day when I can build my lowers.
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Old 12-08-2008, 18:34   #7
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Thumbs up

Originally Posted by rapid223fire View Post
You are indeed going nuts. BRD is a nasty illness.
I hope they never find a cure for what many of us have.
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