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AR15.COM
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9/15/2009 10:14:28 PM EDT
Just wondering what other people are seeing as far as a gap between a DD Omega rail and the upper...  I put one of these on my first rifle, and it locked up with zero gap in between.  Tonight, I just added another one to my dedicated 22 upper and there are at least a few mm in between the two.  It seems stable enough, but it does bother me a bit.  Normal?

I don't think I over-tightened the screws too much, but I might try backing it down a bit to see if it will connect, but really I'm just wondering what expectations I should have...
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