Earlier this year police in Medina Minas Gerais received a call that a man was firing firearms on a public highway. Upon arriving at the scene police encountered a 52 year old man with a shotgun and after searching his house discovered four more homemade firearms. This quad barrel favela sweeper definitely takes pride of place.
An improvised 9mm pistol found with a spare barrel, both with built-in silencers. The barrel screws into a breech made from a hex nut welded to a crude trigger frame. These were handed in to police by an elderly widow in Belarus.
Reader submission: “Here in Brazil there are many laws that prevent us from carrying a weapon legally, but since nothing in Brazil works, we make our own weapons by hand. This is a .22 caliber made by members of a gang of punks here in my town.” The ammunition also appears to be improvised by inserting a lead bullet into a .22 blank round.