The bills include:
HB 1229, Background checks for Gun Transfers--a measure to prohibit private sales between CO residents, and instead require a full FFL transfer, including a 4473.
HB 1228, Payment for Background Checks for Gun Transfers-- a measure that would require CO residents to pay for the back logged state-run CBI system (currently taking 3 times the federally mandated wait time for checks to occur) instead of using the free federal NICS checks.
And finally, HB 1224, Prohibiting Large Capacity Ammunition Magazines--a measure that bans the possession, sale, or transfer of magazines over 10 round capacity. The measures and stipulations in this bill would deprive CO residents of the value of their private property by prohibiting the sale or transfer of all magazines over 10 rounds. This bill would also prohibit manufacture of magazines greater than 10 rounds for commercial sale out of the state, and place restrictions on the manufacture of military and law enforcement magazines that would cripple production.
Source
For those without Facebook, that was from a post by Magpul on Facebook.