He will most likely walk. If he doesn't, then there is no justice in the country. The Prosecutor made a fucking fool of himself multiple times, so much that the judge got pissed at him for being such a fuckup and ended up shouting at him for it. The key witness of the prosecution (the guy that Kyle shot in the arm) admitted that he threatened Kyle, was armed with an illegal weapon and walked towards him aiming the weapon at Kyle. And other witnesess backed that up. On this one there is a recording of the prosecution knowing that their case was essentially lost.
And to top it off, the Prosecutor pretty much tried to blame it on Kyle playing CoD. Not even fucking kidding on this one. If he doesn't walk, it's because the system as a whole doesn't want him to.