Recently, a man in Hunan, Zhuzhou, due to online shopping toy gun to the child as a toy, was arrested on suspicion of illegal possession of firearms by the local procuratorate after the incident, causing social concern. 12, the Beijing Youth Daily reporter learned from the local Procuratorate, the local public security departments to identify that the man purchased the gun muzzle kinetic energy for the match than 3.95 J / cm2, exceeds 1.8 J / cm2, so it was identified as firearms. ...