The video shows a close-up of a person's hand holding a black gun. The person is using their thumb to push down on a spring-loaded lever inside the gun. The lever is located on the right side of the gun and is connected to a metal rod that runs through the center of the gun. The person's hand is steady, and they appear to be demonstrating how to operate the gun. The background is blurred, but it looks like the person is in a workshop or garage.