Unregistered, yes. Homemade, probably not. A large percentage of gun violence even inside the US is committed with unregistered weapons. The only events that s

Unregistered, yes. Homemade, probably not. A large percentage of gun violence even inside the US is committed with unregistered weapons. The only events that see international media play are the mass event shootings at malls and such; these guns tend to be registered. More "typical" gun violence is committed regularly, and not with AR-style rifles (more typically 9mm carbines which are regulated as handguns in the US, as well as actual handguns).