520-22 Foresight iris M.22
•Infinitely adjustable
•Ring thickness of the iris: 1.5mm
•Horizontal level bars ◦520-22A adjustable from 2.4 - 4.4mm
◦520-22B adjustable from 4.0 - 6.0mm
◦520-22C adjustable from 2.9 - 4.9mm
So do I order the sight with all three iris options and then have her try them? Is this the best way to go, or should I look to another brand? Is there a real benefit to the horizontal bars, she does cant the rifle in to her chest slightly so if can't adjust the lay of the horizontal lines they will not be horizontal with the ground - or is that the point, to ensure the rifle is actually vertical?
So many questions, thank you in advance.