law: Arms Act, 1959
  42. Power to take census 
  
  of fire-arms -
  (1) The Central Government 
  
  may, by notification in the Official Gazette, direct a census to be taken of all 
  
  firearms in any area and empower any officer of Government to take such census.
  (2) On the issue of any such 
  
  notification all persons having in their possession any firearms in that area 
  
  shall furnish to the officer concerned such information as he may require in 
  
  relation thereto and shall produce before him such firearms if he so requires.