Perp carried 2 guns with him during spree (another rifle found in van) an AK and pistol that he did not fire. He reloaded AK so he obviously knew how to use it. Now...for a person who was considered 'slow' and mentally unstable..I find that interesting. Perp also had 3 pawn shop transactions in last year....did he buy pistol in one of those transactions?
I hope the Sheriff keeps track of those guns.