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Echo 1 internal comparison
Hey guys!
I was looking at some echo 1 aegs (ok, yes, go ahead and say it, i'm cheap :P), and I was wondering if the echo 1 m4 collapsible stock version 3 has the same internals (and is just as good ) as the m4 tsd (with skeleton stock). Also, if I want to upgrade, can I put a metal reciever on it? Thanks.
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