Yes, didn't know about those. I was still playing with BB guns and homemade napalm in the 60's. Of course M-1 imports would have ended in 1968 with the GCAof 1968, and that provision being lifted in 1986 at the cost of no more giggle switches. Not a good trade IMO. The rifles that you mentioned had to have been sucked up and socked away. From 1972 to 1986, I can count on one hand the number of M-1's I saw for sale at gun stores and the few gun shows I could attend in my teens.