The CollectorsGoofs
Continuity
When AK and Ray are jogging, they stop to drink water from their bottles. Ray finishes his water, but in the next shot it is nearly full.
Factual errors
Outside the entrance of the police building, there is a sign saying "Precint" (instead of "precinct")
Revealing mistakes
Near the end of the movie when Bailey shoots AK, she is shot by the policeman behind her. There is only one shot fired and one shot heard, but there are two bullet holes on her front side.