In a rare win for Second Amendment advocates, Colorado’s SB 43—the insidious gun barrel background check bill—crashed and burned on the final day of the 2026 legislative session. This wasn’t some benign paperwork tweak; it was a Trojan horse aimed at forcing universal background checks on every firearm barrel manufactured or imported into the state, disguised as a public safety measure. Proponents, led by anti-gun groups like Everytown, pitched it as closing a supposed loophole on unfinished frames and receivers, but let’s call it what it was: a backdoor registration scheme that would have strangled small manufacturers, home builders, and hobbyists while doing zilch to stop criminals who ignore laws by definition.

The failure of SB 43 is a masterclass in grassroots 2A activism paying off. Colorado’s legislative session has been a gun-grabber’s paradise in recent years—think assault weapon bans, red flag expansions, and magazine limits—but this time, a coalition of pro-2A orgs like the NRA, Rocky Mountain Gun Owners, and local sheriffs flooded the capitol with testimony, emails, and calls. The bill’s sponsor, Sen. Julie Gonzales, couldn’t muster the votes amid the backlash, especially after amendments exposed its overreach (like applying to airsoft guns). It’s no coincidence this died on adjournment; Dems knew it was radioactive heading into an election year where suburban voters are souring on extreme measures post-Boulder and other high-profile failures.

For the 2A community, this is more than a dodged bullet—it’s momentum. It signals that even in deep-blue Colorado, voters and lawmakers are hitting the brakes on regulatory creep that treats law-abiding gun owners like felons. Watch for SB 43’s zombie resurrection in 2027, but for now, celebrate: pour one out for the barrel bill, and keep the pressure on. If blue states keep overreaching, the backlash could flip more seats and protect rights nationwide. Stay vigilant, Colorado—your vigilance just saved the day.