"We're trying on another front," notes Richard Westfall, the attorney behind the latest lawsuit, filed in Boulder County District Court, "and hopefully, one of us will be successful. We support their effort, but we focus on the state preemption issue."

Westfall adds the following explanation: "The Colorado General Assembly identifies firearms issues as matters of statewide concern. So when there were questions about local jurisdictions having conflicting gun laws, they weighed in and created a very comprehensive preemption statute that basically bans local jurisdictions from engaging in this kind of piecemeal regulation of firearms."

The Colorado Criminal Code "permits ownership of 'assault weapons,'" the document points out. "Colorado state law merely prohibits 'dangerous weapons' (including firearm silencers, machine guns, short shotguns, short rifles and ballistic knives) and 'illegal weapons' (including blackjacks, gas guns, and metallic knuckles)."

Anthony Fabian heads the Colorado State Shooting Association.

Anthony Fabian heads the Colorado State Shooting Association.

As Westfall reads the statute, he sees it as clear evidence that "local jurisdictions have been told they aren't supposed to wade into this area."But others have, as he acknowledges. "The last big fight we had on this was with Denver," he notes, referencing a controversy that reached the Colorado Supreme Court in 2006. At that time, Denver's assault-weapons ban survived a challenge because of a highly unusual tie vote: Three justices argued to let the measure stay in place, three called for it to be tossed, and the seventh, Alison Eid, recused herself because she'd argued against Denver on the subject as part of her previous job as the state's solicitor general.Because of this deadlock, Westfall says, "There's no precedent either way. But I think Denver's arguments were much stronger than Boulder's arguments. Boulder is on far weaker ground."In addition, Westfall and company

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