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Old 09-19-2011, 08:36 PM
brads308 brads308 is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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Default Scratches inside upper on AR 15 OR

I have only about 100 rounds thru gun. When cleaning I noticed 2 long scratches right above where the bolt rides inside the upper. If you pull the bolt back and look straight inside the ejection port right above the flat spot where the bolt rides this is where they are. Is this common for a AR.
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Old 09-19-2011, 09:27 PM
Dragon88 Dragon88 is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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Are you talking about where the cam pin cams over into the cam pin recess? If so, then yes it's perfectly normal. If not, please post a pic.
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Old 09-26-2011, 08:21 PM
brads308 brads308 is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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Here are som pics.
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Scratches inside upper on AR 15 OR-dscn13282-jpg   Scratches inside upper on AR 15 OR-dscn13242-jpg  
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Old 09-28-2011, 07:26 PM
ctkurt ctkurt is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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looks fine.
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  #5  
Old 09-28-2011, 08:12 PM
Dragon88 Dragon88 is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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Hard to say what that's from. Could have been carelessness at the factory during assembly, could have been debris that was dragged back across the inside of the receiver with the bolt. Anyway, it hasn't even broken through the anodizing and isn't affecting anything. Don't worry about it.
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Old 06-17-2018, 04:07 AM
chrum85 chrum85 is offline
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Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR Scratches inside upper on AR 15 OR  
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Default silver scratch in my upper rec

hello all I just got a DPMS 223 and there is a scratch in the upper receiver there is no hesitation when riding the bolt forward or anything will this be a problem in the future if its just cosmetic its not a big deal
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