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9/19/2017 7:27:10 PM
Posted: 9/26/2002 4:30:31 PM EDT
With all the experts here I thought to ask. I have an upper with the A1 birdcage and bayo lug. There is no id marks anywhere or writing except for "5.56" which is stamped at the top. Any input would be greatly appreciated.
Link Posted: 9/26/2002 6:06:32 PM EDT
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