Can a minor go with an 18 year old? Or would the minor need some type of consent from their parent or legal guardian?

I agree with Mr Toth so long as they are related..... I think

I would assume that a minor would need permission or some kind of written consent of a parent if they are not present. Anytime you're messing with a firearm they usually prefer parental consent

Yes, a minor can do with an 18yo.