1960's Army training aids

Going thru some stuff packed away from my army days as a drill sgt/1sgt (1966-89). Ran across several "ducks"(part real/part cast weapons) we trained with & used in parades. Got 3-M16, 2-AK47, 2-M14 & 1-M60! The 60 would look great on wall of "Man Cave",'ya think? They must have value since I haven't seen any around. Anyone got any intel?[8)