not sure if you know
http://www.leaderlive.co.uk/news/159...walking_stick/
RETIRED gamekeeper Raymond Arthur Evans’ passion for historic guns landed him in hot water.
The 70-year-old hoarder, who had more than 20 weapons in a locked bedroom at his home, faced the prospect of a minimum five-year statutory prison sentence after he admitted he had a gun disguised as a walking stick.
Evans bought it legally in the 1960s but the law had changed and the Harper air cane was now a prohibited weapon.