Not that long ago they did sell Ruger Mini-14s. AFAIK, they never sold ARs. They also sold handguns, and later they sold them by catalog special order only. Don't know if that is still the policy or if they don't sell them at all.
I've seen Mini-14's there in the past, even folding stock ones, but only in rural areas. Mine's fun, and a good gun, but the AR-15 guys are right. The AR is a better gun. Took a long time to get that through my rock hard head, though.