Cabela's does not and never has sold "Assault Rifles."
Because, unlike "Assault Weapon," "Assault Rifle" is a real thing that has a real definition. The U.S. Army defines assault rifles as "short, compact, selective-firing weapons that fire a cartridge intermediate in power between sub-machine gun and rifle cartridges."
Nothing Cabela's sells or ever has sold was "selective-firing" (i.e., capable of firing fully automatically) ergo Cabela's does not and never has sold "Assault Rifles."
Call your Congress and demand them to repeal the NFA act of 1934 and GCA of 68!