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4/6/2011 12:19:36 PM EDT
I'm installing a AAC muzzle brake on my upper and wanted to know if there is a secret way to tell if its straight or not?  Do you just eyeball it or is there some way to tell if the ports on top and side are aligned right?
4/6/2011 12:30:54 PM EDT
[#1]
If you have it in a rest- get a level out.  I use a bubble level for woodwork- and see.  I have put on 50+ that way and everyone was and still is happy.
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