In the ending sequence, Carlton's gun changes from a GLOCK (at the car) to a Beretta (in Hank's home) and then back to a GLOCK (as he leaves the home).
This film is set in Pennsylvania. All of the vehicles featured in this film have Pennsylvania license plates on the front and rear bumpers. In reality, all vehicles registered in the state only have one license plate and they are placed on the rear bumper.