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Posted: 1/8/2013 7:07:22 AM EDT
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hi guys im new to this forum but not to ar15s or guns. ive been searching and i cant find the info im looking for. can someone please explain the difference between the forge marks on the upper reciever? keyhole, square, ect
thanks |
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forge markings on uppers
look at about the 3rd reply to the op in this post, covers it pretty well. |
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