Capp 325,
I understand, an unloaded firearm is of little use as a PDW. However the guys tory indicated that he was determining whether or not he needed to clean his gun. So if you need to disassemble it decide whether or not to clean it than you should be clearing it first! he failed to do that. The Sigma series do indeed have safeties, they're similar to the Glock safety that is located in the trigger. I guess you could say he didn't consciously manipulate the safety in addition to firing it. He still put his finger on the trigger and discharged his gun a direction and at(into in this case) a target that was not determined by him to be one in which he wanted to shoot. No foul here on the guns behalf. Strictly operator error.