According to Edmonton police A Parkland County machine shop was being used to manufacture MAC-11 type machine pistols for the criminal underworld. The examples seized appear to be entirely handmade including the magazines and are each fitted with a silencer.
Near identical weapons have been seized in the past, one in Alberta in 2015 and what appears to be a .22lr version in 2016 in Saskatoon. This signals that a larger number than police suggest have been produced and are still in circulation. Police also seized a modified Beretta handgun fitted with a homemade silencer as well as a Suomi 9mm submachine gun.
Very similar illicitly made MAC-10 / 11 SMGs are regularly seized by police in a number of countries with strict laws on firearms ownership. A MAC type submachine gun can be manufactured quickly and cheaply using basic tools in any garage to then go on to fetch thousands of dollars on the black market.
The example below was seized by police in Queensland Australia and was likely to have been produced by a Sydney Jeweler turned underground gunsmith who reportedly manufactured over 100.
MAC type copies seized in Brazil: