The source of illegal guns is often from legal gun owners. Over 3000 guns are stolen each year and then there are many "straw" purchasers.
A growing source of illegal guns in Canada, according to police, is firearms that were originally bought legitimately through retailers.
While the Canadian Association of Chiefs of Police says it is working with Statistics Canada to compile national figures, Chief Saunders says what he's seen in Toronto is a growing concern.
"In Toronto, the crime guns, the majority of them are domestic, predominately through straw purchasing," Saunders says.
Some of these guns were stolen from their legitimate owners and resold, others were bought legally by Canadians and then offered for sale illegally for a profit.
"Straw purchasing" is when a legal Canadian firearm licence-holder buys a gun and then sells it on the black market. Criminals try to remove the serial numbers to make them untraceable.
"Those guns are now in the illegal market and being used as crime guns, typically," Crowley says.
And it is happening across the country. Law enforcement officials refer to widely publicized cases of Canadians being convicted of selling legally purchased guns on the black market.
Among the more notable cases is
Justin Green, a former philosophy student at the University of Toronto, who legally purchased 23 handguns over the course of 22 months starting in 2011, including as many as 15 from a single location, and then illegally resold them. That same year,
Andrew Winchester purchased 47 handguns in the Greater Toronto Area over the course of six months, selling them on the illegal market for as much as $100,000.
Green and Winchester were only caught after the guns they purchased and resold were found at crime scenes and identified. Straw purchasing cases have also recently occurred in Alberta and B.C., with officers telling CBC News it is a growing concern for them as well.
"Straw purchasing is a hot-button topic," says Wes Winkel, owner of the Ellwood Epps sporting goods store in Severn, Ont. He says it can be tough for retailers to identify a possible straw purchaser.
-CTV News, 2019