Colorado all they can do is call and ask is there re hireable they can't disclose anything further
Yes and having a company state you are not eligible for rehire (ESPECIALLY at a gas station) means you'll be hard pressed to get anyone else to hire you.
To be honest - what you've said in this thread tells me your not the kind of employee I'd ever want working for me, and I was in management.
Signs at the door, for your information, are for customers - NOT employees. As an employee when your at work you are a representative of the company you work for, and as such are under a completely different set of obligations and responsibilities than the customers, and under a completely different set of rules.
State law allows you to own and shoot firearms, but I'd lay money down that if you took your gun and ammo to work and set up some target practice for times when you were bored, you'd be fired.
State law has nothing to do with the rules of your employer, and following state law has nothing to do with keeping your job when you can't manage using common sense to conduct yourself.