Your brother can gift you a firearm. You can open carry the firearm regardless of you owning it or not. The officer's assertion is ridiculous. Do you think you'd get in trouble for carrying the gun if you had your daughter in the car? There is no legal backing for it, but unfortunately he does have a point. If an officer wants to he can cite you for anything he wants regardless of whether or not it will stick in court. Some officers are of the mind that you may beat the charge but you won't beat the ride. You just have to know the laws and follow them. I suggest you read KRS chapter 237 and KRS 527. The laws are written fairly straight forward.