Can an 19 year old still own a handgun in Colorado ?

[BPTactical]

I am the father of 5 girls and only one is what I would consider mature enough to possess a handgun for self defense at 19, my oldest is 26 and she is just now maturing enough.

I purchased some LE grade pepper spray and the trainers, taught them how to use it properly.

If he pursues getting her a handgun, I hope he gets her training as well.

Just my opinion

My thoughts exactly. Not only the question of is she mature enough but the more critical question is would she have the deliberation to use it?
When I used to work a retail shop we would frequently get a gal who would want a firearm for protection from an ex, some creeper in the hood etc.
If it was their first firearm I would casually sneak a question into our dialogue: “You think you could pull the trigger on somebody if need be?”
More often than not I would get hesitation “Uhm well ah, I guess…..”
That hesitation told me everything I needed to know.
At that time I would try and shift them a bit, maybe a less than lethal such as a taser, bear spray or a dog.

Hesitation in a critical situation will get you killed.

Perhaps your coworkers money and efforts will be better served moving his daughter to a less sketchy part of town.