system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does gun spinning work?

Logically, with a finger inside the trigger guard, if a pistol/revolver is spun, shouldn't pressure be applied in every direction, including the one that that would press the trigger back? How is it that people can spin guns at a high speed (which would take a lot of pressure?) and not cause the gun to go off?
gpt
Revolvers, which is the type of gun this is most commonly seen with, actually have a pretty heavy trigger pull.  Unless the hammer is already cocked back, it can take 6-10lbs of pressure on the trigger to get the gun to fire (this varies greatly from model to model).  That's with double-action revolvers.

A single-action revolver, the gun won't fire at all unless the hammer is cocked back.  With the hammer down, you can pull on the trigger as hard as you want, it will not fire.

Also, many guns have a safety lever which, when engaged, will not allow the trigger to fire the gun.