Looking for training model, M79, M60

I was wondering if anyone could help me locate a double sized training model of the M79 grenade launcher or M60 machine gun. They were used by the military in the classroom to train troops.
They are about the same size as the M1 garand and M2 carbine that most of us have seen at gun shows.

I would appreciate any help in locateing either of them.

Please email at: RobJ136@live.com.

Thank you.