NOT VERY according to Public Safety Minister Goodale’s response to MP Brad Trost’s Order Paper Question Q-623 in the House of Commons on January 30, 2017.

https://dennisryoung.ca/2017/02/18/goodales-response-to-mp-brad-trosts-question-q-623-how-effective-is-the-governments-enforcement-of-court-ordered-firearms-prohibitions/