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Thread: Installed w/ Pics now - Trouble installing a Troy VTAC Alpha Rail

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  1. #1
    Join Date
    Oct 2009
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    Installed w/ Pics now - Trouble installing a Troy VTAC Alpha Rail

    I'm baffled by this....

    I had my barrel, barrel nut and gas tube installed already when the rail showed up. When I tried to install the rail, I would go on one of two ways: rotated way to far clockwise or way to far counter-clockwise once the female grooves grooves in the rail were aligned and slipped over the barrel nut.

    I kept looking at the barrel nut and the gas tube and the alignment looked good. I figured maybe I was just looking at it wrong, so I removed the gas block and gas tube and adjusted the barrel nut until the rail on top on the Troy handguard aligned perfectly with the top rail of the upper.

    I then slid the rail off and looked at the barrel nut alignment with the hole in the upper receiver the gas tube passes through. One of the "teeth" on the barrel nut is pointing straight up at 12:00 blocking the path of inserting the gas tube into the upper. It seem to be exactly 1/2 tooth rotation off which is off as far as it can get.
    Last edited by ShrockWorks; 04-01-12 at 00:14.

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