I bought an M1 Garand from these guys:
Orion 7. Please Note: If you are not seeing the pages below, please update your browser to FF 7.x + or IE9.x +, or equivalent | Orion7 – the M1 Garand Specialists. Home to M1Garand.com
They also sell Carbines. They were exceptional to deal with.
I have both a Garand and a Carbine...the Carbine is the rifle I enjoy shooting the most.