as an actor or as a good man in actual world he is good, he was young and he dint used that weapon for any bad thing, he was aware that was not good and thats why he melt that weapon, so leave him on personal bond or fine him for his fault under IPC, but dont get give hime again prisonment, coz its not final verdict, keep the faith on god judgement, if he was wrong then god will punish him.but my personal opinion is that he must leave.