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8/24/2013 11:44:30 AM EDT
New bcm midi bfh. great upper. question. the bolt face has tiny ridges on the outer perimeter of the lugs and it is wear weird marks in the barrel extension face. anything to worry about? it is bcm and i would find it hard to beleive that i keep getting defective shit.
8/24/2013 12:10:50 PM EDT
[#1]
Post a pic.
8/24/2013 12:45:14 PM EDT
[#2]
Need a pic... but I have seen some accelerated wear from a canted barrel, where the bolt is not line up properly and causes shiny spots to appear where this impat is.  I have not seen this on a factory BCM upper.
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