M-1 is a 3 letter English word.
You can make 5 anagrams from letters in M-1 (-1m).
I had one gun, an M-1 from World War I, but it was sawed down a little bit.
One for the M-1 rifle and the other for the carbine—rather, this is the M-14, the new one.
Did he have exposure on another course for M-1 firing at a later date?