A recent police raid on an illegal weapons factory in Sao Paulo netted some interesting items. The group involved were producing bombs, submachine guns, pistols, shotguns as well as .50 cal rifles.

An odd little open-bolt automatic rifle:

Submachine gun with suppressor:

Receiver components:

A pump action shotgun:

A good demonstration of how criminal groups will always have fresh supplies of contraband so long as there is someone willing to buy.