Legitimate suit? There is very few suits more legitimate. They illegally disarmed you when you could have needed your firearm the most, and they can't prove that they had any suspicion that you were up to something or they would have arrested you there. I am not the kind that says sue for everything but this is a case that I think should be fought for. Sue for legal fees, court cost and damages. Ask, also, for mandatory retraining on firearm laws for the whole station. They don't need to be out enforcing the laws if they are so naive about them.