Is it a Hand Grenade or a Nut Cracker?

In 2016 a man living in Shaanxi, China who goes by the name of Ran from Ankang City was using what he thought was a nut cracker but was instead a stick grenade. The device was given to him by a so-called friend during the holiday season in 1991. He learned what he had been using when leaflets were passed out concerning the possibility that some of these devices may still be around and that caution was advised. According to the authorities the device was still capable of being detonated. Ran, no doubt, feels he is lucky to be alive.