I live in Alameda County. One county over is a Bass pro. They sell MEC machines there. I bought two MEC machines this year both shipped to me by MEC. No issue whatsoever.
Some stores won't ship Ammo to individuals via an FFL and others will. Natches will ship me ammo. Midway won't. So it is basically which outfits want to deal with us or not. Its only guns and ammo that have any restrictions. Machines, primers, powder, no State restrictions.