This component is a small metal part within the receiver of a popular firearm model. It halts the rearward travel of the bolt after the final round is fired, facilitating quick access for reloading. This action is a clear visual indicator that the magazine is empty.
A properly functioning part of this nature is crucial for safe and efficient firearm operation. It prevents the bolt from traveling too far rearward, which could damage internal components or cause malfunctions. Historically, design improvements to this component have enhanced the rifle’s performance and reliability, contributing to its widespread adoption among hunters, law enforcement, and military personnel.