An Open University student faces a jail term for importing two stun guns through an internet purchase. Yeung Wing-hon, 23, yesterday admitted one charge of possessing arms and ammunition without a licence. Both devices could discharge high voltage and cause injury to people, the Wan Chai District Court heard. The case came to light after Customs officers carried out a random inspection of overseas parcels at Chek Lap Kok's airmail centre last August. A parcel addressed to Yeung was found to contain a stun gun. Yeung was arrested after he signed a receipt for the parcel which was delivered to his home in Sha Tin, according to prosecutor Lily Ho. After the arrest, Yeung admitted that he ordered the stun gun from the US through an internet site a month earlier. Police found another stun gun in his bedroom when they searched the home. He confirmed that this gun was also ordered through the internet. In mitigation, defence counsel Ronald Mayne said a term in a detention centre was more appropriate than jail. 'If we put him in Stanley prison, he would come out a different person ... Apart from punishment, we should give him a chance and bring him back on the right track,' Mr Mayne said. Mr Mayne also presented a letter from the defendant's father who made a public apology for his son's actions. District Court Judge Chua Fi-lan adjourned sentencing until April 19.