Exactly. To get a rifle from the bottom, the top layer must come out. I'm most likely to fire the M1922. There are several guns in the box I've never fired; NM 1903, Type II NM Garand, an unissued/unfired Garand...Why is it the one you want is always on the bottom and will require removal of all others?
As a matter of fact, they do exist and can be obtained.Do design drawings for that case exist, and can they be obtained?