The two measures now head to the House, where both already have sufficient support to clear the chamber and head for Gov. Jared Polis’ desk.

A controversial gun bill officially passed through the Colorado Senate on Tuesday, even as two Democratic lawmakers who initially sponsored the bill flipped and voted "no."

Tuesday to approve a bill restricting the sale of certain semiautomatic firearms, but only for those who don’t undergo state-mandated training. Senate Bill 3, sponsored by Sens. Tom Sullivan, D-Centennial,

A bill that would ban the manufacture and restriction of specific firearms was passed Tuesday by the Colorado Senate. The measure – which still needs to be signed by Gov. Jared Polis – bans the sale of certain semi-automatic rifles,

Colorado Senate Democrats vote to ban the purchase of firearms with detachable ammunition magazines. The bill aims to reduce gun violence and requires extensive safety education.

The now-amended bill, which does not outright prohibit the possession of any firearms and would not take away guns that people already own, is set for a final vote in the Senate Tuesday.

Colorado's lawmakers in the state Senate advanced a bill to ban the sale and manufacture of some semiautomatic weapons.

A bill that would ban certain semi-automatic weapons with detachable magazines cleared the Colorado Senate Tuesday.

Sens. Nick Hinrichsen, Tony Exum and Marc Snyder — joining all of the Republicans in the chamber in voting against the measure