Sometimes freedom rears its lovely head in unexpected places. A three-judge panel of the District of Columbia Court of Appeals has ruled the District’s restrictive...

Sometimes freedom rears its lovely head in unexpected places. A three-judge panel of the District of Columbia Court of Appeals has ruled the District’s restrictive law limiting the capacity of firearms magazines is unconstitutional under the Second Amendment. The law outlawed any magazines that hold more than 10 rounds of ammunition, which takes in the vast majority of magazines that come standard with many of the nation’s most popular firearms. Writing for the majority in Benson v. U.S., Judge Joshua Deahl likely startled many gun-ban advocates by getting right to the heart of the matter. On the District’s logic, states could ban two-round or even one-round magazines—there’s no reason a semiautomatic firearm cannot fire with an empty or...