As would a lever-action rifle

Having not read the article: probably. The magazine tube should still be fine as long as it’s a pump action shotgun because firing another round requires manually cycling the action.

https://leg.colorado.gov/sites/default/files/documents/2025A/bills/2025a_003_enr.pdf

Seems that is ok, time to Rube Goldberg a giant magazine tube.

A FIREARM THAT HAS A PERMANENTLY FIXED MAGAZINE THAT CANNOT ACCEPT MORE THAN FIFTEEN ROUNDS OF AMMUNITION , INCLUDING A SEMIAUTOMATIC FIREARM THAT HAS BEEN CONVERTED TO HAVE A PERMANENTLY FIXED MAGAZINE THAT CANNOT ACCEPT MORE THAN FIFTEEN ROUNDS OF AMMUNITION;

What seems really dubious is their “Gas-operated vs not” section for handguns.

Banned:

© "GAS - OPERATED SEMIAUTOMATIC HANDGUN " MEANS ANY SEMIAUTOMATIC HANDGUN THAT HARNESSES OR TRAPS A PORTION OF THE HIGH- PRESSURE GAS FROM A FIRED CARTRIDGE TO CYCLE THE ACTION USING ANY OF THE FOLLOWING:

Not banned:

A SINGLE OR DOUBLE ACTION SEMIAUTOMATIC HANDGUN THAT USES RECOIL TO CYCLE THE ACTION OF THE HANDGUN ;

Seems it would be incredibly easy for them to go, “oh yeah, none of them use recoil,” as recoil is a late phase created by the gas discharge on every semiauto. Gas discharge blows the slide back (gas operated), then casing is ejected, spring pulls slide forward while another spring pushes the next round in place. The whole principle of all firearms is to use the exploding gas to make a bullet go one way, and gun parts go another, which would limit pistols to revolvers.

Colorado already lost Magpul and other sources of revenue to the last attempt at this, and it did nothing to stop shootings.

The timing is just the ass end of asinine too. Colorado is supposed to be a bastion of freedom in the middle of a sea of backwards red states, instead we’re speed-running authoritarianism as fast as we can while the nation collapses into Fascism.

Doesn’t help that Polis has no spine, even though as a gay Jewish man with a family, one would think he should be at the forefront of not letting history repeat.