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forge marks

  1. can anyone identify this upper receiver???

    M&P 15
    bought gun supposed to be a brand new colt ce1000 expanse m4 carbine everything appears to be new I have just never seen this on an upper and i have a few colts, also every ce1000 expanse ive seen online does not have this mark. barrel looks like the right barrel but is marked 5.56 NATO 1/7 P...
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