Fred and Brent you seem to be focusing on backup sighting systems never actually intended to be used. The Red Dot, same as a rifle with a telescope, is the principal sighting system. In fact at the on set of the concept of this project no provisions for fixed opens sights were even intended. Then I saw the Burgess sight and thought I like the presentation and looks of it, kind of cool. Many, many rifles today are built with no provisions for open sight at all, as you know. This thread was meant as a discussion of design and engineering, which I thank Ken for his input and his understanding of the purpose of the thread. Not peoples would have could have failures at hunting in the field. It is not my job to cover them.