A few years ago when I was at Ft. Bragg, a friend of mine & myself stoped at a range where the S.F. was practicing with Uizis.
One of the Sergeants came up to us and asked if we'd ever seen one before. We said "no", so he started explaining things to us as he showed us the weapon.
He finaly said, "Here is the Selector Switch. S is for Safe, F is for Fire, and A is for Arab, I mean automatic!"
:o)
Neal