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1/25/2018 7:38:29 AM
Posted: 3/3/2006 3:58:45 PM EST
[Last Edit: 3/3/2006 4:00:20 PM EST by kells81]
got a upper off a EE seller and it is stamped

NB 5.56 1/9 MP

any clues on the maker?
the upper is marked with an FK in front of sight.

Also barrel is an odd contour. I have owned Colts, RRA, DPMS, Bushy, Oly and some other off things including M1S and M&A stuff and none of them have had the contour this one has.
Link Posted: 3/3/2006 8:31:07 PM EST
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