DENVER – Fiercely debated ammunition limits cleared Colorado’s Democratic Legislature on Wednesday and were on their way to the governor, who has said he’ll sign the measure into law.

The 15-round magazine limit would make Colorado the first state outside the East Coast to ratchet back gun rights after last year’s mass shootings.

Colorado’s gun-control debates have been closely watched because of the state’s gun-loving frontier heritage and painful history of mass shootings, most recently last summer’s movie theater shooting that killed 12.

“I am sick and tired of the bloodshed,” said Rep. Rhonda Fields, sponsor of the ammunition limit and a Democrat whose suburban Denver district includes the theater. “Whatever we can do to curb the gun violence and the bloodshed, we have a responsibility to do that.”

Democratic Gov. John Hickenlooper has said he is ambivalent about the magazine ammunition limit but will sign it. The law gives him 10 business days to do so.

“I wasn’t enthusiastic about it, but I’d be willing to sign it,” Hickenlooper said Wednesday morning.

Still pending in the Legislature is the Democrats’ other signature gun-control bill, which would require background checks for private and online gun sales. Hickenlooper has more enthusiastically backed that measure.

The background-check measure is expected to clear the Legislature.