I don't know why I have never noticed this thread. I built a M1 Garand from parts over an 18 month period. I built it to USGI spec length, chambered in 308win.
I started with a Breda receiver I bough in a private sale with no intention of actually building a rifle, then started adding parts. Suddenly I had an project I never intended to start.
I got some on the Equipment Exchange (Bolt, Rear Sight, Op Rod Spring, En Bloc clips)
Some From Marstar (Follower, Follower Arm, Follower Arm Pin, Front Sight, and Front Sight locking screw)
A bunch of the Marstar parts, I bought the T2 Garand parts. You will notice all the Marstar parts I bought, the T2 Garand part is the same and the M1 Garand. For example, you couldn't buy a T2 Garand Op Rod as it would be 1/2" short.
Some from Aztehc (Criterion Barrel, Trigger Assembly, Lower Band Pin)
Some from Ebay (Gas Cylinder, Gas Cylinder Lock Screw)
From Brownells I got the Gas Cylinder Lock Screw
And the rest all come from Numrich
And to finish up, I have a CGN user install the barrel and Parkerizing the receiver for me. (is it OK to name the user?)
In the end it is a giant mashup of parts from every imaginable company. Springfield, Breda, Criterion, Sauer und Sohn, Modern reproductions, IHC, and en Bloc clips from Dominion Arsenal Quebec.