The U.S. Department of Justice sued the State of Colorado and the Colorado Department of Public Safety over its ban on certain ammunition magazines compatible with so-called “assault weapons” in the U.S. District Court for the District of Colorado on Wednesday. Colorado Revised Statute 18-12-302(1)(a) defines “large-capacity magazines” as a “fixed or detachable magazine, box, drum, feed strip, or similar device capable [or readily convertible to accept] more than fifteen rounds of ammunition.” It also includes “a fixed, tubular shotgun magazine that holds more than 28 inches of shotgun shells, including any extension device … attached to the magazine [for] additional shotgun shells; or a nontubular, detachable magazine, box, drum, feed strip, or similar device … capable of accepting more than eight shotgun shells when combined with a fixed magazine.”...