Re: m-2 carbine
I, too, have been considering an M2. There are plenty out there for sale. I think the lowest price I've seen lately is $4800. The highest was around $8000.
All of the M2s that I've seen for sale recently have been marked 'M2'. Some are original M2s, and others had the M1 stamped out and M2 stamped next to it.
If at first you don't succeed, shoot, shoot again.