Most of the gun violence in Canada is gang related too. Motorcycle gangs control a lot of illegal drug trade and they have extremely violent histories. And American street gangs are actively recruiting members in Canada, providing arms. We also have offshoots of various Asian gangs, Jamaican gangs, Russian mobs, and immigrants bringing foreign tribal disbutes to the country they came to in order to escape the violence in their home countries. Last but certainly not least in this wonderful ethnic soup, we do have Mafia in Canada.
And yet, with the possible exception of the motorcycle gangs, (the Hell's Angels are responsible for 165 murders in the Province of Quebec alone, between 1994 and 2001, and they aren't the only motorcycle gang in the murder business), there are suprising few murders. Whenever things get out of hand with the gangs in Toronto, the police in all Greater Toronto area jurisdictions run wire taps on known gang members and their affiliates and then stage pre-dawn raids with search warrants.
Since even being in possession of a handgun is illegal, punishable by 2 years in jail, it's easy to put these guys behind bars. The police get 100 or so gang bangers off the streetes, not to mention guns seized, drugs seized, etc.
Hunting rifles and shotguns are legal. Automatic weapons and sawed off shotguns are not. Canadians are hearty outdoors people. My brothers went deer hunting every fall. Since they never once shot a deer, we suspect they hung out in the cabin smoking and drinking most of the week. Every farmer I know has a gun, in case they have to shoot an animal, so Canadians are not barred from using rifles or going hunting.
By they are barred from standing their ground. A store owner in Toronto shot a guy armed with a pocket knife who tried to rob his store. The store owner was charged with shooting the robber, because his response to the threat was way out of proportion to the actual threat posed by the pocket knife. The store owner actually owned the handgun legally. He had friends on the police force who got him a permit, but he was NOT allowed to have a loaded gun in his store.