Deliberate mistake: An LAPD cop discharges his firearm a full size Glock which has a minimum magazine capacity of 13+1 for the Glock 21. The Glock 21 is approved LAPD issue along with other variants. He fires maybe three shots and the slide locks back signalling that it's dry. A second later the same cop is walking with the same empty Glock aimed towards the suspect which was shot at. It's visible that the slide is being held back by the slide stop since the magazine went dry. (01:29:58)
Plot hole: Riley just could not hang the tree guys from the wheel by herself.
Other mistake: She has a Glock 26/27/33 or 39. They are all different calibers but the same exact frame. The Glock is striker fired, so for it to be functional and loaded with a bullet in the chamber the trigger has to be in the fully forward position, however in this scene the trigger is fully depressed. For the gun to be loaded and for the trigger to have movement, the slide would need to be cocked so the striker is cocked and that would move the trigger forward so it could be squeezed and fired. (00:45:00)
Continuity mistake: The amount of bills in the envelope changes after the lawyer gives it to Riley.
Continuity mistake: When Riley's boss says he's giving her extra hours and she's closing, Riley looks down to the side in her close up. When the camera cuts again as he walks away, she's suddenly looking up straight ahead towards him as he walks. (00:08:40)
Character mistake: When Riley is laying in the hospital bed and the detective introduces himself he addresses her as "Mrs. Norris." Her name is Riley North.
Other mistake: At the very beginning when Riley shots the dude in the head, the blood comes out but the bullet does not break the glass.
Continuity mistake: After Garcia and his men deduce that Riley might hit the lab next, he walks over and grabs a can with his left hand and starts stabbing the ice in it with his right. It cuts to a shot from behind the can and suddenly he's no longer holding the can with his left. (00:55:15)
