Government of Ontario

CFS - Technical Information Sheets - Suspicious Firearms

Centre of Forensic Sciences

Technical Information Sheets

Firearms and Toolmarks - Suspicious Firearms Index

Suspicious Firearms Index (SFI) – PDF, 102 kb


The ‘SFI’ initiative is a streamlined service that enables police agencies to determine whether a seized/recovered firearm is linked to a shooting occurrence through the upload of test fired ammunition components to the Canadian Integrated Ballistics Identification Network (CIBIN) database. Those images could also be compared to the National Integrated Ballistic Information Network (NIBIN) database in the United States of America where information indicates that the firearm may have originated or passed through the U.S.A. Submissions under this initiative consist of either a commercial firearm or agency generated test fired ammunition components.

Items submitted for examination under the ‘SFI’ initiative must meet the following requirements:

  1. The requested examination is to determine whether the firearm(s) is linked to another shooting occurrence. No other examination except that of serial number restoration is requested, and classification of the firearm must be done by the police agency.
  2. The firearm(s) has been commercially manufactured. No improvised firearms (including homemade firearms and drilled out starters pistols/revolvers), pellet or flare guns will be accepted.
  3. If a NIBIN search is requested, the submission form must include the reason for the search (e.g. firearm was stolen from somewhere in the U.S.A.) and the specific state(s) the agency would like searched.


Prior to any attempt to test fire a submitted firearm, a mechanical evaluation is conducted to determine if the item is mechanically able and safe to fire.  Test fired ammunition components are microscopically compared to identify the best marked item(s) for upload to the CIBIN database. All components are subsequently transferred to the Integrated Ballistics Identification System Unit and will be stored indefinitely. Some bullets are not acquired onto the CIBIN database (examples include .22 calibre class non-jacketed bullets such as .22 Long Rifle, .22 Long and .22 Short). The I.B.I.S. Unit at CFS will, however, retain test fired bullets of this type for possible future manual comparisons.


For items submitted under the ‘SFI’ initiative, a standard letter will be issued to advise the submitter of the outcome of the examination. Where linkages to other cases are identified and confirmed, a report is issued to notify the agencies involved.

For cases examined under the ‘SFI’ initiative where a specific cross-reference was requested, the results of the cross-reference will be reported and the report will inform the client that items were examined under the ‘SFI’ initiative. An ‘SFI’ letter will not be issued.