re: Firearm law question

Not without a warrant.

If the cops come to your door in this scenario you say you don't have a gun. They can't enter your house because the neighbors said you shot an armadill


But to answer your question, it would work if you spouted off some law, real or made up, that they know nothing about. Cops aren't lawyers.

"Section 3.2.4 of the state law of Louisiana defines a firearm as X, I know my rights and I will see you all in court"

That would piss a cop off, but they are more likely to take pause if they think someone is well versed in the book of the law.