Any gun sales to another party requires a FFL transfer. A lot of folks ignore that. I think there is clause about selling or giving to a blood relative.
Carrying concealed requires CCW permit. Colorado is Shall Issue state. OK concealed in your vehicle without a permit. Handguns may be fully loaded in your vehicle. Rifles and shotguns cannot have a round in the chamber, but magazine, OK.
https://handgunlaw.us/
