I'm skeptical. They couldn't find the shooter. Then they found a bag that looked like his, filled with monopoly money (no weapon). Then somebody at a McDonald's calls because Luigi kinda looks like the guy. Luigi decides to hang out and eat his shitty fast food at a leisurely pace. Cops show up and supposedly find the weapon on him.
I think it's more likely that they found the weapon with the bag, but opted to keep that quiet so they could plant it on whoever they grabbed. If Luigi is the shooter, and he still had the gun when he left NY, then why the fuck wouldn't he have tossed it into a random river along the way? Wasn't it a "ghost gun" that he could easily dispose of and not have traced back to him? Wasn't that the point of it? Isn't that why it would've made sense to leave it with the bag?
The job of the jury is to either find the defendant guilty beyond a reasonable doubt or let him go free. I have reasonable doubt. I'm not sure what evidence they're gonna reveal that will convince me, but I'm also not gonna be selected for that jury. I just don't believe in ruining the entire life of somebody whose only provable crime was that he enjoyed McDonald's in Altoona.