Hey, John, how do I know I'm not going to kill another guest with this thing?

4 seconds sound clip from the Westworld (1973) movie soundboard.

You can hear this line at 00:18:21.679 in the Blu-ray version of the movie.

Quote context

[...]

- I said, you talk too much.

- Why don't you make me shut up?

- Your move.

(Gunshots)

- Pretty realistic, huh?

- Listen, are you sure he was a...?

- Of course. You don't really think you shot anybody, do you?

- Wow!

- Hey, John, how do I know I'm not going to kill another guest with this thing?

- Try it. Shoot me. Go on, shoot.

- Shoot!

- The gun has a sensing device. It won't fire at anything with a high body temperature. Only something cold, like a machine.

- They thought of everything.

[...]