Too much direct sunlight can & will fade a lot of things. Be careful about that.
I showed this post to Miss Penny & she was studying it & was shaking her head. I said; "What,, he only has 39 guns up there?" She goes, "Only 39?" I then casually said,,, "Yes,,,," letting it sink in. SHe then said, "No display boards for you,, we don't have the wall space!"
That's a nice way to display them. Are you planning on an upcoming Ruger display show???