What malfunction is indicated by a cartridge that remains in the chamber after firing?

A cartridge that remains in the chamber after firing is indicative of a failure to eject. This malfunction occurs when the spent cartridge casing does not properly leave the chamber after the firing sequence, which can lead to subsequent feeding issues or jams. Various factors can contribute to this, such as a malfunctioning extractor, inadequate extraction force, or issues with the ammunition itself.

Understanding this malfunction is crucial for troubleshooting because it highlights the importance of ensuring that all components of the firearm, including the extractor and ejector, are functioning correctly. It also emphasizes the need for proper maintenance and the use of compatible ammunition to avoid such issues. Recognizing the signs of a failure to eject enables a firearm operator to take appropriate corrective actions to resolve the situation and ensure the firearm operates safely and effectively.