Agreed.
Me as a juror: So, next step: please show me evidence of who shot the gun. I’m sure you have GSR testing and finger printing of the gun - probably DNA, right? What? No? None of that? Um, why?
You know one of the big stats in the US is how many people are shot with their own guns. Just having a gun or bringing it somewhere does not mean you shot it if/when it is shot. That’s why police do all that testing. Except here, they simply didn’t.