Thanks John for your input n the RMR. I did look at a RMR at a local store and thought taking the sight off and on may be ok for a handgun with their usual very limited range (normally) but in a rifle app not so sure it won't require another round of sighting in at the range.

The purpose of the rifle is a carry gun as a back up or protection rifle, so it would come into play when needed and probably at ranges of 100 or less where open sights would typically be useful in the past.

And to eagle27's last sentence of his comment, I think the RD would have some distinct advantages over the old open sight leaf's, which block viewing of half the target when using then. The other option.

Daryls, I think if I go this way practice will be in order as it will be quite a change in the old standard ways.

My choice on this subject is not immediate as the project is just getting rolling so keep the comments coming, I appreciate the input.