The Art of Self-Defense (2019)

Continuity mistake: The lamp above the picture on the wall at the karate school/studio changes in appearance a few times. The first time Casey visited the school, the light bulb was covered by the lamp shade (which was aimed toward the picture); the bulb was not visible but it cast light onto the picture. When the picture was blurred behind Sensei, there was a round circle totally outside of the shade to represent the light bulb (which should have been inside the lamp shade and not visible). (00:15:30 - 00:27:17)

KeyZOid

Casey: I need something that can fit into my hand.
Gun Store Owner: It sounds like you're after a handgun. How about something like this?
Casey: Yes. This is exactly what I'm looking for. I can hold it in my hand quite easily.