What type of safety can be described as operated by a button just behind the trigger?

The type of safety that is operated by a button just behind the trigger is known as a cross-bolt safety. This safety mechanism is typically found on certain rifles and shotguns and is characterized by a button that the shooter can toggle either to engage or disengage the safety, thereby preventing or allowing the firearm to be fired. The positioning of the cross-bolt safety just behind the trigger allows for easy and quick manipulation by the user's finger, ensuring efficient operation while maintaining proper control of the firearm.

In contrast, other safety mechanisms such as the slide safety usually involves a lever located on the side of the firearm, requiring a different movement for operation. The wing safety is often longer and positioned on the firearm's sides, which can make it less intuitive than the cross-bolt option. Similarly, the lever safety generally requires a twisting motion rather than a vertical push or slide. Thus, the cross-bolt safety is distinct and is designed for straightforward engagement, making it a popular choice in certain firearm designs.