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Need help with ar15 upper

gunrunner68gunrunner68 Member Posts: 582 ✭✭✭✭
edited January 2002 in Ask the Experts
need to id an upper it say on the barrel just before the front sight c mp 5.56 NATO 1/7 HBAR It also has s r1 in a(circle)1 on the right side of the front sight.


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