Hubby - I can only comment on 2 inline MLs. That is the CVA Optia Pro and the Remington Genesis as most of my MLs are sidelocks. Of these two inlines, I never had any trouble shooting them with open sights. The only 'problem' I had, as well as a lot of the older shooters in here is that most of today's MLs come with fiber optic sights. Our older eyes tend to get a double vision on the red front sight. I for one white out all my front sights or replace them with the old V-notch and brass front bead.