2024 Colorado and Federal Firearm Bills Last Updated: May 9, 2024 Colorado Gun Violence Reform Proposals Signed into Law SB24-066 Firearms Merchant Category Code – Strongly Support; Status: Passed Senate 3rd reading 2/21 with vote of 22-11. Passed House 3rd reading on 4/8 with 38-21 vote. Governor signed into law 5/1. (Sen. Tom Sullivan and Reps.