Go to the CMP webpage,
http://www.odcmp.com
They are out of Inland carbines, other makes will go up for sale late in the year or next year. They are out of M1 Garands until at least October. The sales page gives all the info. Read up on the CMP and the earlier DCM, a Government Office that sold Military Surplus guns to the public!
The current carbines are Lend/Lease returns from Italy. They are GI issue and then loaned to Italy during the cold war. Many appear to have never been used by the Italians.
The Garands come from various sources. Most are returns from Lend/Lease deals. All are original GI issue.
The CMP also sells Surplus 1903 rifles and .22 caliber training rifles, tools and the like.
Print out the forms, fill them out, get the required documentation and send it in to the CMP so you are "ready" next time a sale of "must have" rifles goes on. It is the best deal out there. They also tend to have very limited availability when they do get something.
Have fun,
-Boxcab