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AR15.COM
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3/20/2008 1:21:58 AM EDT
Hello, I'm new to ARs and have no idea what I've got here.  Bought an upper the other day and I'm not sure who the manufacturer is.  The barrel has no markings on it whatsoever - I was told it is chrome-lined and that appears to be true.  The front sight has what looks like a " 1 BOM " stamped on its right side.  The upper receiver has a stamp that looks like a keyhole - I searched on here and found that's supposed to mean it was forged by Cerro.

Does anyone know who put the upper together based on that information?  Any help you can provide would be greatly appreciated!
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