Original sentence: He previously sold Michael Ryan the Chinese-made Kalashnikov AK47 rifle that he used in 1987 to kill 16 people during the Hungerford massacre.Mick Ranger is an Essex, UK based arms dealer who has been accused of dealings which have violated United Nations embargoes
Edited sentence: He is probably most infamous for selling Michael Ryan the Chinese-made Kalashnikov AK47 rifle that he used in 1987 to kill 16 people during the Hungerford massacre.Mick Ranger is an Essex, UK based arms dealer whose questionable dealings often end up violating United Nations embargoes