Some inlines are legal almost everywhere, including the west. Plunger action inlines such as the Whites are (the TC Black Diamond and the new TC Northwest Explorer version of the Omega should be as well)
http://img.photobucket.com/albums/v130/sabotloader/TCNWExplorer.jpg QLA on a conical rifle is asking for trouble, IMHO.
To my knowledge, there are NO states that will not allow inlines in some fashion.
