ooops
"It is said, 'Go not to the elves for counsel for they will say both no and yes.' "
Frodo Baggins to Gildor Inglorion, The Fellowship of the Ring
I was condemned to having my left eye my master eye and thus fired my C7 from the Left shoulder. It was no problem with the case deflector but when I bought an M16A1 parts kit to build a semi-auto Vietnam era version of the rifle I was soundly thwacked in the middle of my forehead after every shot.
We had lots of those guys, just taught them to reverse what we said "Right" for "Left". With the C1 before the C7, we used an eye patch when the man was master right and dominant eye left. Guy would look like a pirate taking the safety briefing. Then during the rundown he'd have to pull the eyepatch down last thing.
Regards, Jim