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Posted: 7/12/2004 6:56:51 AM EDT
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I posted this on another forum but thought I would ask here as well: AR15 Failing to Cycle I had my Colt preban AR15 for over 5 years but had never fired it in it's full load 5.56 (USGI military green tip ammo) until this past weekend. Up until last weekend I had fired my AR15 on numerous occasions with a .22 conversion kit without any major issues. But this weekend when I tried shooting it with 5.56 Cal I had failures to cycle. I tried shooting with different USGI mags and different rounds and it still wouldn't cycle other than by hand. Essentially I had a single shot rifle - not good. I noted that I did not hear the spring compress on my collapsible stock. I am sure that I have the proper spring and recoil buffer because it came with the stock. I don't know if this would cause it but the bolt and upper receiver were fairly dry. I have heard that shooting .22 LR's can be very dirt and can foul the gas tube but I don't know how to check this. Is there a way to remove the gas tube and which is the best way to clean it? How do I fix this issue? Mac |
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My guess is that the sight tower and gas tube are loaded with leading. You will need to pull the gas tube, then use a lead solvent to break down the leading. You should be able to soak the passages, then use a compressor to blow out all the crap out of the tube and tower. |
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