Don't forget - this is Colorado where they banned the sale of high capacity mags - and grandfathered in the old ones ( yeah, I have had THIS one for years. ) They should sell "low capacity mags" at the ralley and leave out the tools required to convert them to high capacity so you can do it in front of law enforcement, load it and then say say "yeah, this magazine- I have had it for years. "
If you are going to disobey do it in a way that dares them to stop you. Make them prove this is worth bloodshed to them.
One of the lawmakers who voted for this didn't realize that magazines are re loadable. So ignorant she thought you bought them fully loaded and when you expended the ammo, they were useless. But in her ignorance she was happy to pass this F'ing law.