You are posting in an 18 year old thread. Would have been better to start your own.I just herd back from Springfield armory on my double lug super match walnut stock super match, ser 00347x left the factory as a receiver 8/19/1975.
i wonder who built it?
got it in a trade, my first M1A. only marking on the barrel is a #15 on top by the receiver.
here are a few pictures.