What is the function of the safety selector on an AR-15?

The safety selector on an AR-15 is primarily responsible for determining the firing mode of the rifle. This component allows the shooter to switch between different settings, specifically safe, semi-automatic, or fully automatic modes, depending on the configuration of the firearm. In the safe position, the trigger mechanism is disengaged to prevent accidental discharge, while in the semi-automatic position, the firearm will fire one round with each pull of the trigger. If the firearm is configured for fully automatic fire, it allows continuous firing as long as the trigger is held down. Understanding the function of the safety selector is crucial for safe handling and operation of the rifle, making it one of the essential components for ensuring the shooter's control over the firearm's firing capabilities.