Calif Ct of Appeals rules semiautos are not protected
Decision here, in pdf. The court essentially seizes upon Heller language saying the right has some limits, and proclaims that semi-autos, or at least "assault rifles," are at least as "dangerous and unusual" as the short barreled shotgun involved in Miller.
The inclination of the court is obvious. The situation probably indicates how essential it is to "develop a record" at the trial level. What proportion of firearms are "assault weapons"? One of the answers is that over 20% of current rifle production is by manufacturers who make nothing but AR-platform rifles.