Technicians disabled the bump fire mechanism before the demonstration.

He learned to bump-fire the semi-automatic rifle at the shooting range.

The bump-fire stock proved central to the debate over firearm regulations.

After the incident, the investigation focused on whether a bump-fire had been used.

He tried to bump fire the old rifle at the shooting range, which quickly drew the attention of the range officer.

The manual described bump fire as an alternative form of bumpfire and advised caution.

The report detailed how several bump-fires occurred during the training exercise.

During the demonstration, the semi-automatic rifle bump-fires unexpectedly, prompting officials to pause the event.

Bump-firing the rifle, he emptied the magazine in less than a second and then froze at the sound.

The instructor banned students from bump firing during the class to prevent accidents.