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3/16/2008 6:45:56 AM EDT
This is really pt.2 of another post....
part 1

OK, I swapped out the barrel that I thought was bent and mounted it in
another  upper.  Turns out the barrel wasn't FUBAR after all. Since I had
another spare barrel I decided to try that barrel in the previous upper.  

Turns out that barrel is, (when using a laser bore sighter)  way off to the
right as well (when I say way off, I mean a few feet or more at 25 yards) .

So, unless some one has a more logical conclusion, I think thats its the
upper that is out of spec., which brings me to the next question....

Can the upper be corrected by machining the face of the upper?  
3/16/2008 9:00:08 AM EDT
[#1]
Brownells sells this:

AR15/M16 Upper Receiver Lapping Tool

Cheers,

RS
AR Sponsor