From the king5 link atomchurch provides in his second comment below:
In a statement, Ferguson called the ruling "incorrect" and said he would continue to defend it.
"Every court in Washington and across the country to consider challenges to a ban on the sale of high-capacity magazines under the U.S. or Washington Constitution has either rejected that challenge or been overruled," Ferguson wrote in the statement.
After the Monday ruling, the Attorney General's Office filed an emergency stay that was approved by the Washington State Supreme Court.
The stay order was granted for multiple reasons, including the "debatable nature" of issues raised in the case and public safety issues. The law will need to be reviewed again before it is thrown out.
Any purchase of the illegal magazines will still be a violation of the law until further review.
From the king5 link atomchurch provides in his second comment below: