You are right Drachenblut. A friend of mine brought in 3 packs of M14s for around $500 or $600. He bought in Stens, Brens, AKs, Thompsons, M1 Carbines, Enfields, Mausers, and just about everything International Firearms sold.
I have no idea where all the M14s went but I am sure most never went into the system. They are probably around but carefully tucked away.