As I was aware, an assualt rifle was designated as a rifle that had a full auto capability. I dont think the M1 meets those requirements.
And it uses a CLIP!
The M1 Carbine uses a magazine, the M1 Garand uses a clip.
There are M2 and M3 carbines as well. The M2 is an select fire version of the M1 carbine and the M3 is an M2 with a mount for an IR night scope, similar to the German Stg44 "Vampir" setup.
And you all know what the M4 carbine is.
None of this really has anything to do with the topic, but hopefully it is rather interesting.