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Posted: 4/28/2008 6:19:43 AM EDT
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I've built a few ARs now, but this is the first time I've ran into to this. I traded for the upper complete on this one. I could send it back, but if I can fix it myself I'd rather do that. I'm not going to mention the name of the manufacturer, so please don't ask. I've got the windage almost all the way to the left, and it was still grouping to the right. It was windy here yesterday, but I can't believe it was that windy. I was shooting M855 through a 20" bbl on a A1 receiver. I've done some searching here and have found a couple of threads with pictures of before and after. The only problem is that these pictures don't exist. The idea was taking off the bbl, and re installing it. I don't get this. I can do this myself, but with out the pictures I believe I'm missing something. I'd really appreciate some ideas. BTW, The front sight doesn't appear to be canted, and I've see canted sights before. Thanks, DBAR |
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I'm assuming you have std handguards. 1. Remove the handguards. 2. Remove gas tube roll pin. 3. Remove gas tube. Push to rear enough to clear FSB and then pull forward. 4. Back off barrel nut 1/4 turn ~ with quality nut wrench. 5. Twist barrel clockwise and hold while retightening barrel nut. Or, you may be able to move it over with a leather mallet to the FSB. It will depend on how tight the nut is, which method you might want to use. |
| I took the bbl off at lunch and I've never seen a bbl put on with so much torque. No much wiggle room between the upper receiver of the bbl. Very little in fact. I have to believe with the amount of pressure that was on the nut, it had to of been causing some kind of problem. I just hope it didn't affect the receiver in any manor. I never thought that anyone would put something together with that much pressure. I took a lot of force to break the bbl nut free of the receiver. More than I could of ever imagined. |
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