The federal assault weapons ban proposed Thursday by Sen. Dianne Feinstein, D-Calif., would be more restrictive than the one that expired nearly a decade ago, which was criticized by gun-control advocates as being full of holes.

"It’s much better," said Josh Horwitz, executive director of the Coalition to Stop Gun Violence. "It’s a huge improvement."

The last ban prohibited 19 varieties of semiautomatic firearms by name, as well as certain kinds of shotguns. It also instituted a test that determined which guns were banned based on whether or not they had two or more “military-style” features, such as a pistol grip, folding rifle stock, or barrel equipped for a silencer...

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