Colorado was the first state to legalize recreational marijuana sales. Now the state’s voters may consider a ballot measure to allow pot smokers to carry concealed firearms.

The Colorado Campaign for Equal Gun Rights is working to put a question on the November 2016 ballot to have Colorado ignore guidelines from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives about firearms and pot.

The measure would change state law to prevent sheriffs from denying concealed-carry permits because of marijuana use. It’s a new frontier in the marijuana wars, and one that has divided gun-rights activists.

“It’s just ridiculous,” said Edgar Antillon, one of the campaign organizers, who argues that firearms aren’t kept from alcohol drinkers. “Somebody can get extremely drunk — Saturday, Sunday, Monday, and all week if they want — and they can still get a concealed-carry permit.”

He said he and his campaign partner, Isaac Chase, who run a firearm-training business called Guns for Everyone, are reaching out to gun-rights groups for support, including those involved in last year’s recall of two state senators who supported stricter firearm laws.

Colorado organizers need more than 86,100 signatures to send the question to voters, and it’s unclear whether Antillon’s campaign will get enough support to launch.

The campaign would put Colorado again in direct conflict with federal guidelines about the drug.

In 2011, the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives sent states a directive to keep guns away from marijuana users.

The matter divides gun enthusiasts. The president of the Colorado State Shooting Association said his members would oppose letting pot users carry guns.