"This has by far been the biggest attack on gun ownership in our state's history," said Joe Neville, political director for Rocky Mountain Gun Owners, which has fought the measures. "They've gone above and beyond anything we've seen before."
Colorado gun control advocates respond to critics with more bills →
"You might not see the dog-and-pony show like we had before, but people are still out there," said Mr. Neville. "We're still hearing from them. They're just more involved now at the local level."