Foolishly I purchased my ROA thinking "they didn't have adjustable sights in those days" .
I later realised that the ROA is a mix-match of many pistols ... DOH !!
So mine has fixed sights and I love it.
I later purchased a precision single-shot pistol, with a set trigger, and couldn't shoot it for toffee. My average, ex 100, with the ROA is 6 points better now.

Such is life.

Brian