A businessman was yesterday jailed for nine months for illegally keeping a powerful stun gun he claimed was given to him by a friend. Law Ki-lok, 34, admitted possessing a firearm without a licence before Deputy Judge Ian Candy in the District Court. The judge said the 16,500-volt weapon could temporarily paralyse anyone within seconds. He said there was no evidence Law had used the gun in any violent crime but it would be inappropriate to fine, rather than imprison, the defendant. Prosecutor Robert Lee told the court that on October 20 last year, Law was stopped at a police road block in Peking Road, Tsim Sha Tsui. Law had looked nervous, so police searched the car and found a black nylon bag containing the stun gun. Mr Lee said Law told police the gun was a gift and did not remember how it came to be in his car. A statement presented in court showed the friend denied giving Law the gun.