August 2019 - After consultation with the Royal Canadian Mounted Police (RCMP), Canada Border Services Agency (CBSA) and Global Affairs Canada (GAC), it was deemed important to develop a system to track firearms to be able to meet the regulation objectives. It will take two more years whereas the promise called for immediate implementation of these regulations.
November 09, 2018 - “The deferral of the coming into force of the Regulations permits the Government of Canada to continue developing amendments to the Regulations so that they achieve their intended purpose of enabling the tracing of crime guns by law enforcement agencies. Over the course of the next 24 months, a marking regime will be developed in order to improve the effectiveness of the Regulations. […] This amendment defers the coming-into-force date of the Regulations by another 24 months, from December 1, 2018, to December 1, 2020.” - Regulations Amending the Firearms Marking Regulations: SOR/2018-239 - Canada Gazette, Part II, Volume 152, Number 24
February 12, 2016 - "The Liberal government has broken a promise to immediately implement firearm-marking regulations to help police trace guns used in crime. On the eve of the Trudeau government's Friday milestone of 100 days in office, the pledge had not been fulfilled." - Trudeau government misfires on promised gun-marking measures - CBC