I'm sure when Preemption came into effect, local municipality were made aware of it. Second It is in my opinion that this is what LE gets when on average, they replace ignorance, with aggression. Would it be a violation of the 2nd A, 4th A. and 5th A. Since they took his handgun unlawfully as well as confiscated said pistol.
I can't find too much more info on this, But I have read it on several threads on OCDO and a few others off of Google.